The end of the galaxy as we know it?
Our Milky Way galaxy is an anomaly in more ways than one. And now, NASA scientists say they know exactly when it will come to an end.
In a universe that is forever spreading apart, the Milky Way has been moving closer to celestial neighbor the Andromeda galaxy. But whether we are in for intergalactic Armageddon or an extraterrestrial fender bender has been a mystery - until now.
“Very interestingly, we find that Andromeda galaxy does appear to be coming straight at us,” said Roeland van der Marel, an astronomer at the Space Telescope Science Institute in Baltimore. He was scheduled to speak at a NASA press conference Thursday.
The discovery was made thanks to images taken over the 22-year lifespan of the Hubble Space Telescope. But the quest to determine the Milky Way galaxy’s expiration date has been undertaken by astronomers for more than 100 years. Now, for the first time, NASA scientists say they know “with certainty” when our beloved galaxy will cease to exist as we know it, what it will look like and how it will happen.
New data collected by the Hubble Space Telescope proves, NASA says, that in 4 billion years the Milky Way and Andromeda will collide or pass each other by so closely that the gravitational force each exerts on the other will cause them to slow down to the point of merging. The merger will be completed 6 billion years from now.
When galaxies collide
At the outset of universal existence, Andromeda and the Milky Way were each going their separate ways, van der Marel said.
“They have been approaching each other for the last 5 billion years," he said. "For the first 8 billion years, they were moving away from each other, and now they are moving closer together - and that will continue, always.”
In our local universe, which consists of around 50 galaxies, according to van der Marel, the Milky Way and Andromeda are goliaths. There are two galaxies that have around one-tenth the mass of two giants, and the rest are less than 1%. Each exists at the center of its own universal microcosm, with smaller galaxies swirling around similar to a solar system.
It is the massive gravitational pull that ultimately drew the Milky Way and Andromeda together, and will ultimately cause them to become one.
“The clear finding is, we are going to merge with Andromeda,” van der Marel said. “In the past, it was just a possibility, but now it is a known fact that this will happen.”
The finding was determined by comparing pictures of the sky taken by the Hubble Space Telescope over a number of years and comparing the movement of the galaxies, allowing scientists to determine the trajectory of the Andromeda for the first time.
There is a 9% chance that M-33, a satellite galaxy of Andromeda, will hit the Milky Way first in what van der Marel called a "one-two punch," causing it to become a satellite of the new galaxy that is formed.
What an intergalactic merger looks like
Van der Marel described it as a “really big cosmic pileup” that will light up the sky.
When the two galaxies hit, each containing its own set of stars and cosmic gases, the result will be the formation of many new stars - all shining bright.
The Milky Way, as it exists now, is a flat disc shape similar to a frisbee. Andromeda is more spherical. When the two combine, they will form an "elliptical galaxy," or what van der Marel described as a football-shaped galaxy. Rather than seeing a band of stars on the cosmic horizon, someone on Earth would theoretically be surrounded by them as shown in a simulation unveiled to show what the night sky will look like in 6 billion years.
The new vision of the stars won't be the only earthly changes.
“Our sun and Earth will go on a new journey through the universe,” van der Marel explained.
When Andromeda gets here, the sun will likely be pushed out much farther into the universe. By that time though, Earth will have become too hot to be inhabited by humans anyway.
Our sun will not be directly hit when the initial collision happens in 4 billion years. But in 6 billion years, when the merger is complete, our sun will die.
Meaning in the cosmos
Life on Earth as we know it will certainly not be possible by the time this great galactic merger is expected to take place. But as van der Marel said, there are “many more uncertainties than the laws of physics,” and the human race may well have figured out how to carry on with existence.
"It's a very long time from now, so people don’t have to lie awake or take out insurance," van der Marel said. "What makes it really special is it is going to happen to us, it's our sun, it's our planet, and humans are really fascinated about what our fate is going to be."
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Will it destroy Uranus?
Hasn't Uranus been pretty much destroyed already?
That was great, I've seen what you did there. xD
Where is the shoddy builder?
http://www.youtube.com/watch?v=Z7ceXF1n0bs
I love the part where he "jumps" in surprise. Incredibly bad acting ... like made for scifi channel bad acting.
Heh 3:54 – 3:55 in the vid...the little alien just vanishes as the guy approaches...outstanding video! lol
Well does that mean that Andromeda will get sucked down the black hole that is at the center of our Galaxy?
"There are two galaxies that have around one-tenth the mass of two giants, and the rest are less than 1%."
My favorite line in that article...Grade A nonsense.
@Fug Xu, the line is not well-written, but as Sean pointed out, the meaning is clear to anyone with a brain.
I thought I was the only one that realized the BS of that line.
Line should have ended "...and the remaining galaxies total mass is about 1% of the mass of Andromeda and the Milky Way combined."
@Brian
Lol, not my fault you don't have a brain.
And we'll still think that digital watches were a pretty neat idea.
Maybe this is the answer to life, the universe and everything.
That would be 42.
aah but what is the question
6×9
maybe someone in andromeda is just trying to clear the way to build a new hyperspace bypass...
We'll just move our planets and their stars to a safe distance by then like Pierson's Puppeteers.
I JUST READ THE RING WORLD BOOKS! ... Haven't got to the Juggler of Worlds yet. (Catching up on my bucket list of Sci-Fi to read)
I read Ringworld over 20 yrs ago, it has never left me, it's a must read.
My cay is named Speaker-to-animals.
Gosh darn it, there goes my retirement.
If you're saving in terms of Billions of years for retirement, I think you need to talk to a financial expert 😉
I know, seriously, they're talking about billions of years. Although they should start worrying about this occurence, hey, they have a few billion years to figure it out anyway!
Y 10K will CERTAINLY kill off the human race... our nuclear reactors will blow.
People can say any nonsense that 's never gonna happen because they know they won't be here by then. I feel sorry for people who do pay taxes. This is where your money go
It certainly hasn't gone into your education; you can barely write English.
I can't ask for an event 6,000,000,000 years away. Good Lord, grant me tomorrow
Cool. Interesting.
I don't think that I'll wait up for it.
Make sure to get it on video and post it to youtube.
I'm sure by then we will have a procedure where we can neurologically upload what we see to what will by then be a massive wifi neuro internet system where Youtube is the new Big Brother....only we're policing ourselves....and by then sugar will be illegal...as well as Hannity.
I read this in the Revelation Space series of novels by Alastair Reynolds. Only in his universe aliens were relocating life forms in our galaxy so they would survive. But, none of us will be around to see it – so who cares?
But you were interested enough to read and understand it...
"The thing's hollow! It goes on forever, and... oh My God, it's full of stars!"
Dave, is that you Dave? Great quote, Bowman ...
...he didn't say "oh"...
It's a quote from the book, not the movie.
Commander Shepard will save us!!
In either red, blue, or green...
The Andromeda galaxy will put quite a STRAIN on the Milky Way galaxy.
strain or stain?
The simple fact is that the human race will be long gone by then. We are having our time, just as the dinosaurs had theirs. I am thinking the bugs will have evolved to the point where they are running the place by then. There are FAR more bugs on the planet than people. I bet their god will look like a bug.
"I bet their god will look like a bug." I bet you're right!
Insects already had their time. They ruled the Earth before the Dino's, I believe it was during the carboniferous period.
There is a lot of truth to that statement, about their god being a bug. We assume a lot to think our god looks like us, or an alien looking like us. I think we have a lot wrong.
That is a quite astute comment.
It's called anthropomorphism.
A disturbance in the Force I detect, fuel up the Millennium Falcon I'm out of here !!!!!!!!!!!!!!!
Nadie save la hora, ni el dia, ni aun los angeles que estan en el cielo con el, un paso en la direccion correcta es mejor que vivir mil aNos solo pensandolo............
No han angeles en ninguna parte mas que en las fantasias infantiles de los que creen en cunetos de hadas. En el cielo no hay nada.
...Eating a Milky Way bar now. I will most likely be working on the very instant we become one with the Andromeda Galaxy. By then my 401K which was reduced to a 101K should have grown.
Beam me up Scotty!
Milky Way bars are the bomb.
I love Milky Ways!
a milky way with peanuts is a snickers
Read these comments below, i dont know why some of you even read articles this .. we have the internet could be talking about important things . but 99% of the talk are bad jokes or religious and political propaganda.
I thought it was supposed to happen in December?? I trust these "experts" as much as that wacko religious guy who has been predicting earth's demise for the past 20 years and has been wrong every time.
The experts confirmed the myan calendar did not say the world was supposed to end in December in February.
In February, the experts confirmed the myan calendar did not say the world was supposed to end in December.
Its amazing how many people really think that people are going to be around when the "sun explodes" or "dies".....have you ever seen those flies in the desert? In Australia the inner out back rarely sees water, but once in a very long while, sometimes years in between, the water finally makes it inland....the flies, or whatever they are flutter around a few short hours happy in their ignorance, sing dance eat drink mate lay their eggs and then quietly go off into the nothingness.....its amazing to me to hear people compare themselves with the lives of Stars!!!! What a joke. Our civilization is a civilization of flies...not to say that life is not sacred, it is....but we are flies, none the less...if our civilization could last another five hundred years at this size, I would be very surprised, if I could live to talk and think at that time. We have already run up against the wall of the easy discoveries....from here on end...its the hard stuff all the way.
I actually enjoyed your poignant observation and analogy, Peter. I agree with you 100%.
Excellent. I love it when somebody out there rarely posts something worth reading. Thank you.
On the other hand, if humor is golden, the comments here are a veritable Fort Knox.
This is the only CNN sub-website on which I can stand to read the comments – many are some combination of insightful and funny.
I agree!
Get us out of here Scotty!
6 billion years from now!!!!!!!! I'm working a double, crap, I'm gonna miss it.
"Thanks for all the fish!" -Dolphins
so long...
I have heard this my entire life. We are on a spiral arm and probably would sail right through anyway even if we hadn't died of old age.
This may be true, but The Fab Four will always be FOREVER!
HAS to be Galactic Road Rage. We just don't know which galaxy flipped off the other after passing 180 billion years ago.
This is funny. Thanks Guido.
Oh boy, yet another reason for the "preppers" to get all worked up. Might be a good time to buy gold if you are a Glenn Beck fan.
Should I make reservations at "The Restaurant at the End of the Universe" now, or wait a couple of years?
"Should I make reservations at "The Restaurant at the End of the Universe" now, or wait a couple of years?" Try the radioactive fries at the Truckstop at the end of the World.
Thumbs up for the Adams reference.
I tried already, they full up. I'm personally checking out every phone booth I find, hoping to catch a ride out of here!
doesn't really matter... just as long as you put in a deposit now so it will earn enough interest to pay for your exorbitant meal once you get to the end of the universe.
So does this mean American Idol will FINALLY go off the air???
It means Steven Tyler will no longer need to pay for his rehab membership.
We won't be around to enjoy the collision–the sun will bake and then absorb the earth in about a billion years so will be extinct by then.
I will still be here....
4 to 4.5 Billion years actually. The Sun is about half way through it's life.
Actually, no. In as little as 1 million (thats million, not billion) the sun's radiating temperature will increase and be strong enough to extinguish most if not all life on earth already. Little known fact that people (except scientists) tend to ignore. Oh, and this whole article is absolute rubbish, nothing will the "destroyed", and any civilization that is existing at that time (outside of our solar system) will not "feel" anything as the gravitational effects between the stars is too weak to perturb any orbits.
Will the resultant galaxy be to big to fail?
will the exact date be December 21, 6,000,002,012?
Yes, you are quite correct. The Mayan calendar irrefutably predicts this. It also predicts that rhesus monkeys will form an new political party in the U.S. that will come to power in 2020, and that they will mandate bananas in all school lunches. I, for one, will welcome our new simian overlords.
I think I saw a movie about that, in fact I think I saw about a dozen movies about that...
"Get your stinking hands off me, you damned dirty ape!"
paws actually, sorry bout that
Cosmology is more conjecture than science." The universe is not only strange but stranger than we can imagine"".
That's it, I'm voting Republican. It's the only way we can avoid this catastrophe!
Wasn't this an episode of Doctor Who?
Nah, that was just the Earth going extinct due to the sun going Nova, I believe. Assuming you're referring to the second episode with Chris Eccleston, that is.
I miss Carl Sagan.
I second that.
I still might have time to pay off all my bills....
I hope I'm around to see it. I eat oatmeal everday to stay healthy and live a long, long life.
Oatmeal poisoning while texting, to be correct.
What will happen to the price of FaceBook when this happens?
What about the TSA?
The universe is expanding because of global warming!!
It's too bad that our current species will almost certainly not be around to see this. Within the next 5 billion years the sun will have become a red giant and consumed the Earth and other inner planets. In geologic time people have been around for the blink of an eye and I don't see many encouraging signs that they will be around much longer. But wow, what a cool view it would be as NGC 224 approached.
IIn under 100 years we have gone from flight to reaching the moon. I think we have a shot.
yeah and to shutting down the space program 🙂
I better get my helmet on.......now where did I put it?
Oh, sure, another cosmic mega-merger. The big get bigger and countless planets and moons get wiped out! WE ARE THE 99%!!!
The real question is: when this happens, will Pluto become a planet again???
It always has been and still is in my heart, man!
Star Trek had this figured out 30 years ago. It has taken government funded programs much longer to come to these same conclusions. The study of Quantum physics using the much maligned Gamma Theta Epsilon postulation put forth by Di Vinci in the 16th Century has already proven this but, was previously rejected by JPL astrophysicists. Consequently, efforts to further the time warp continuum project has been set-back many generations. For those who are earth-bound, having your feet firmly planted on terracotta, does the term "Beam me up Scotty" have a ring of familiarity? What does this mean for humankind? Simply that as the two galaxies approach each other the opportunity for finding and traveling to another earth-like planet is increased exponentially. Earth's resources will likely have been depleted long before the merger begins so, survival of the human species will hinge on our ability to monitor the cosmic events leading up to it while developing a timetable and the means to capitalize on this opportunity. This means once again, "Back to the Future" where Copernicus postulated his oft maligned Phi Tri-Gamma Alpha Codex which is the basis of Einstein's theory of relativity. Let's hope cooler heads prevail and we get this done right the first time. Only God knows if we'll get a second chance. Tally Ho!
I don't know about you, but I have my feet firmly planted on Terra firma, not terracotta...
He said "Terracotta" oh man this is too much.
Terracotta...... that's a killer, haven't laughed this hard in a while!
Wow... umm.. the hundred billion stars in the Milky Way not enough for you to find a decent planet? If that is the case, why will adding the 100 billion more of M31 change anything?
Well said fellow earth rider. Hail Carl Sagan.
Don't you know that all sicence comes from the imaginations of writers, duh!
I feel better already ... thank you
Don't worry. Congress will pass a law blocking the merger.
Your comment just made me spew water.
Humanity will be long gone by the time this happens. Also, the article tries to deceive you into thinking that the Sun's death will be the result of the collision, but nothing could be farther from the truth. The Sun is going to die in approximately 3-5 billion years as its supply of hydrogen fuel is depleted, and regardless of whether Andromeda collides with us.
This study also assumes that the properties of the Universe are static, but they are not. We believe the universe is expanding, but we cannot say with certainty whether the universe will continue to expand forever, or if it will ultimately reverse course and contract back into a primordial "head of a pin."
There are still too many unknowns to declare anything that will happen billions of years from now.
And you know these fact by....I can't wait til Sunday brunch so I can expand too!
The ultimate fate of the universe has actually become far clearer in the last ten years. Perhaps the most dramatic development in cosmology within that time has been the discovery that galactic recession is actually accelerating, utterly defying the conventional wisdom re. gravity and the known mass in the universe. This is currently attributed to "dark energy". The universe is due to continue expanding until an eventual and utter heat death in which all particle activity ceases. Don't hold your breath for this eventuality. It's not due for the next google years. Just to picture how long that is: there are approximately 10 to the 85th power atoms in the known universe. This time scale will exceed that by a factor of a quadrillion.
I will probably still be paying my student loans back.......
I am with you
Heck... I'm still in deferrment on my Fed student loans... Working on my credit cards first, since the interest rate is higher. So yeah... I 'might' have my student loans paid off by then.
Easy to make statements that the galaxy movement “will continue, always” and that a collision is going to happen “with certainty” billions of years from now. Won’t be held accountable for your statements if inaccurate.
As opposed to what?
no one will be around to hold him in account. If you don't think so, your knowledge of the universe is too small to read these articles. Go back to sleep
That's the point! Anyone can say anything they want about what "will" happen billions of years from now. Nobody will ever know whether his statements hold any accuracy.
Don't worry I got something in my utility belt that will stop the merger!......I'm Batman!
Good thing we ended the NASA space program... whoops!
Hi friends, this photo from NASA does say "Andromeda galaxy halo" however we have a better photo that is coming very soon!
http://hubblesite.org/gallery/album/galaxy/pr2003015f/npp/all/titles/true/
Elizabeth Landau, CNN
the earth will cease to be habitable in 1 billion years, the sun's radiation output today is roughly 15% brighter than 1 billion years ago, and it will be 15% brighter than it is now in 1 billion years to come. this will make earth a lot like venus
There are technological solutions to the sun's brightening over that lengthy time span. For example, billions of small reflective bits of metal could be placed in an orbit between earth and sun, possibly at the L1 Lagrangian point (so they would stay in the same relative place from earth as we go around the sun). The reflective bits could be scattered at just the right density to decrease the solar radiation hitting earth, to compensate for the sun's slowly increasing brightness. Many things are possible over a billion years of time.
Lets get solar energy from those fragments in orbit somehow at the same time...dual use...
Guess I'd better start recycling my beer cans then...
Medical science will have already poisoned humanity with drugs. No one will be here to watch anyway.
Tell Steve Jobs that… oh wait.
Please explain your rationale that somehow we might NOT make it through under Obama. What catastrophic possiblities are there that I am not seeing?
If the universe is supposed to include everything how can a universe be local? Galaxies may contain up to 10 million stars for a dwarf to 100 trillion stars for a giant. There might be 170 billion galaxies in the universe. In addition dark matter is theorized to be a force which separates galaxies and keeps them from colliding. Also dark matter is theorized to be 4 times greater than all other matter. This article is confusing.
They wrote poorly. Should have said "their local part of the universe."
That said, "the universe" does not contain everything. Our universe contains everything from our big bang. If you believe in a multiverse though, and it certainly seems plausible, even likely, then there are many universes in space. Possibly as many universes as there are galaxies in our own universe. Space is infinite after all.
I don't think Congress should allow this mega merger. This will simply drive up prices for consumers.
Hahahahaha – nice.
You just outed yourself – you are not the real Adam Smith.
Its just to bad we wont be around to this magnificent sight.
won't be "too" bad...
I thought the Earth was only 6000 years old and we were all going to be raptured to paradise any minute now... Was there a memo I didn't get? My computer's been down but somebody could have mentioned it at lunch!
Amen!
4 more years!! 4 more years!! Thanks for all the great leadership President Obama!!
The Milky Way will not "end" (as in disappear, or be destroyed, or such) when we merge with Andromeda. In fact, very few, if any, stars will actually collide. Clouds of gas will, and that will result in new star formation. But the Milky Way will not "end". It will become larger in combination with Andromeda, in fact. Maybe they will call the larger galaxy "Milky Andromeda" or "Andromeda Way", who knows. But misleading headlines like "The end of the galaxy....." show poor journalistic ethics, in my opinion.
Right you are! However some stars and solar systems will be thrown out into inter-galactic space. How lonely!
"World Ends!" sells more magazines (or online ads) than "Galaxies to Merge – No Cause for Alarm!"
I must point out, you did not complete the headline. The headline is, "The end of the galaxy as we know it?" which is completely true.
I'd be willing to bet that the increased gravitational forces would cause many suns to collide though. Certainly not all, but more than would occur without the merging of the galaxies.
OOOH! When the Milky Way and Andromeda galaxies collide, it will form one really, really big Milky Way candy bar. Love em. I can hardly wait. We will all have to be patient though.
Dang! I am getting very depressive with our end so close.
Sounds like earth needs an elliptical trainer.
I just copyrighted "Milkdromeda Galaxy." Gonna be rich!
lol!
Then I'll take the Anky Way!
I want to watch it from the restaurant at the end of the universe.
Beauty reference, Aardie! RIP Douglas Adams.
Time to update my will!
It is my belief that everything that exists is part of an infinite cycle that has always been and always will be. In attempting to explain this, I believe there are 2 states that exist. These states are analogous to the binary system that comprises 100% of this computerized digital age. I am only comparing this with the 2 most basic binary digits, the 0 and the 1.
To begin, the binary digit 0 represents the state of nothingness. Since the state of nothingness doesn't contain anything then this state can be infinite (i.e. an empty universe with no matter.) The binary digit 1 represents the opposite state of nothingness, which is a state of something-ness. If there wasn't an opposite state of nothingness then I wouldn't be sitting here typing this at this moment. Since there is a state of something-ness it must have also always existed, and will always exist.
I believe that "time" starts at moment 0 in a continuous cycle when all matter known to exist has gravitated together to form it's next cycle. Since this cycle always has been and always will be then time only has meaning in the present cycle. As the matter in the universe contracts to a single mass ready to explode again to begin another cycle. At this point all matter has been reconverted to the state of something-ness exploding into a new universe. In this infinite cyclic theory then it doesn't matter how much time it takes for the universe to expand out, expend it's energy and be pulled back to reform the state of something-ness and begin it's cycle again. Maybe just another way to explain the Big Bang theory.
Just my 2-bits so 6 billion years is nothing to infinity.
You can't get something from nothing, where did the matter come from to begin with. Also not enough mass to cause predicted collapse. Your theory is full of dark matter.
@ karek40
No scientific theory states matter came from nothing. You imply there was a time before matter; therefore it needs to ‘come from’ somewhere. Setting the question up so you can ‘disprove’ the concept is fail.
yes you can, and hawkings radiation is proof of this. in a closed system virtual particles can spontaniously become real matter and hang around for as long as they would like.
OK, Now what is 1 + 0=? This has been bugging me a long time.
The "Big Crunch" idea has been around for a long time. The two possibilities are Big Crunch (gravity overcomes universe expanion) or Heat Death (expansion overcomes gravity, everything cools down and sits tight. forever.)
Except that it is well known that all matter will NOT gravitate together eventually. The matter from our big bang is actually accelerating further and further apart forever. So much for your theory, sounded good till you got to that part. You'll have to come up with another reason for the next state of nothingness to come about.
"Well... I was going to say I saw a duckie and a horsie, but I changed my mind." – Charlie Brown
NOOOOOOOOOOOOOOOOOOOOoooooooooo!
Dr. Who will save us, or at least show up for the spectacle.
Hate to tell some of you, but I've been to the Andromeda Galaxy ..... and it's way way over rated. The people there are very strange with their little heads and long skinny legs. And the food......the .last time I ordered out, I had to complain about the pizza....just not as good as on Earth. ......the crust is too thick and the sauce is too runny....got it all over my new white shirt. And the ride.....boy oh boy bring lots of water....it's a long ride. The people there also can change visible reality at will, so watch what you wish for. Hope this helps....thanks, El Dar Con Giggidy.
Nice, very creative.
Signed,
Admiral Ackbar
Good luck to humanity surviving the next hundred years, let alone the next four billion.
You said it!
Heh, good point.
Oh...six BILLION years.....I was worried. For a minute I thought they said 6 million years. Whew!!!
And Congress will still not have reached an agreement on anything . . . .
Also, some of them will still be in office due to no term limits...
I knew this neighborhood wasn't safe anymore.
Cheesus, they can not predict the weather for tomorrow or control thei own bawels, but have the balls to pretend they know what is going to happen in 6 billion years! How insane is that?!
Because the number of unknowns in predicting the trajectory of galaxies through largely empty space after collecting 22 years worth of data are fewer than the number of unknowns in knowing with 100% certainty what a localized weather pattern in a tumultuous environment will look like.
We have no way of knowing, with any degree of scientific certainty, if our whole known Universe is not just a tiny teeny spec in an infinite ocean of specs, inside some cosmic petri dish. In that sense, we are not much different from yeast, just before the fermentation process had reached 12% alcohol level. Be grateful, fulfilled and content in this moment. Enjoy your time in the Sun!
Thank you Mike!
Collecting 22 years worth of data that is 2.5 million years old, my friend. A lot may have changed in that time, not to mention what can change in 6 billion years in this "static" universe. Perception is not the reality.
if a US marine sniper can hit a target a mile away, i'm pretty sure scientists can calculate the path of 2 enormous galaxies...
andromeda is 228,000 light years across how hard can it be for people to figure out that as it gets larger in the nightsky, its coming towards us?!?
that made me LOL
who's gonna prove them wrong???
It's not especially difficult considering the scales involved. The Milky Way is about 100,000 light years wide, and is only about 2.6 million light years from Andromeda, so Andromeda is only 26 times further away than the width of our galaxy. This is nothing compared to the difficulty of landing a space probe on another planet, as the ratio of distance to the scale of the object is many orders of magnitude greater–yet NASA has routinely accomplished this.
it's not so much a matter of scale but about the understanding of universal laws. we also know about DNA sequences but don't know what causes cancerous cells to grow (similar scales). Mike is right – using 22 years (if that) of observations from a single perspective to proclaim with 100% certainty what will happen in 4-6 billion years is senseless. Somehow scientists these days expect people to follow their ideas with blind faith. there used to be something called the scientific method where people understood that interpretation is part of the process of finding new explanations – aka theories (and they change with new knowledge/new perspective). If anyone thinks we can't possibly have more to learn about universal laws in the next 4 billion years, I would question their expertise as a scientist.
The big bang was similar to a firework going off exploding in the sky with little suns going off in different directions. The difference is in the universe we will not keep going forever into oblivion and burn out. Our mass and gravitational pull will eventually cause us to join other galaxies creating a bigger mass and gravitational pull. Until eventually the universe is pulled back into one massive sun that under immense gravitational pressure will explode like a super-supernova, and a rebirth of the universe will have recycled itself.
Well, except for that whole Dark Energy problem we can't explain. The universe isn't just expanding still, it's expanding FASTER every day. It's sorta funny how we find out more and more about our reality as we go on... and just realized that there's even more we don't know because of it.
Utterly ridiculous.
You are 100% wrong. Our universe is actually accelerating away from it's origin to infinity. It is a well known and proven fact. The mechanism is not fully understood I don't believe but it seems to have something to do with dark energy.
Rick. I read the article and it definitely said that for the first 8 billion or so years our two galaxies were headed AWAY from each other and only in the last 5 billion years have they began heading toward each other. Seems to me, a lot can change out there in the universe so to use terms like PROVE and 100% seems a bit, well, ignorant. We can really only tell what is currently happening and what we expect to happen barring changes caused by forces we not only cannot fully comprehend, but may not even be aware of yet.
Just because somebody says something will "always" happen doesn't make it fact, however PROBABLE it may be.
time to pack up.
ITS COMING RIGHT FOR US!
My God, you're right! AAAAHHHHHHH!
My house might be paid off by then
Heh, mine won't.
thats why we need to invest right now into deep space travel
Well, it is 4 BILLION years away. We can afford to wait until tomorrow I'd say.
How much can foods and water should I be hoarding? Should I book a seat on that new space passenger ship that is in the news or can I wait? Should I warn everyone else or is it, every person for themselves? Can I bring a playboy mag with me?
LIES!!
When I look at the picture of that galaxy (even though it's not Andromeda), I can't help but think about how many millions, upon millions of lifeforms exist there. Amazing and so cool that life is not unique, and is actually so common and prevalent throughout the universe.
How did you conclude that? We're spending billions trying to figure that out and you somehow just were able to give us the answer for free?! Yay, there is prevalent life everywhere because Bub said so!
Given that there are billions of planets and billions of galaxies in our universe alone simple statistics would indicate that if there is life on one there is a high likelihood there is life on others as well and zero evidence that there is not.
Rick – I agree with you in principle, but we have not yet proven it. We are desperately trying to prove it and I think we will at some point and I am excited about the prospect of such discovery. At this point we have nothing. There are billions of stars in our universe, but the latest estimate is 400 million galaxies.
Maybe this will be an opportunity to meet life from another planet without having to worry about the current speed limit of light. Even if face-to-face is not possible, perhaps communication will be possible. However, based on our brilliant track record of relations between people on this earth, I doubt we will last the 4 to 6 billion years necessary.
Darn! And I JUST washed my car!
And now we are one!
The picture of the galaxy is stated to be the Andromeda Galaxy. But it can't be. The Andromeda Galaxy is seen at much more of an angle from Earth. And the quality of the picture makes it appear the galaxy is small and far away since a picture of the Andromeda Galaxy, one of the brightest, easiest-to-see galaxies, would provide a much sharper image.
Anyone know what galaxy this really is?
Snickers
these scientists do not now what they are talking about, i guarantee you-they are in the dark. Just kids playing with telescopes and trying to get paid!!!!
trolling or just dumb?
My guess... just dumb. These religious nut-jobs have no sense of humor... or intelligence for that matter.
It's certainly not Andromeda.Looks more like a slice of the Hubble Deep Field Photo.
The "photo" is an illustration intended to show what the sky might look like from a nearby vantage point as the galaxies are merging. It's not showing any present-day conditions, so it shouldn't bear a strong resemblance to the Andromeda we see today.
They changed the photo after the story had been posted ten or fifteen minutes. The earlier photo was a grainy small galaxy on a fuzzy starry background.
As steve noted, wrong photo. Try this one.
http://www.solstation.com/x-objects/and2gal.jpg
Will that mark the end of the Snickers and Three Musketeers too?
Yes. The Marathon Bar was the first of the three to go.
I don't think I'll be around in 6 billion years. Our sun will be gone as we know it in about 4 billion years from what I hear, so will it matter? I do like to hear the theorys that they come out with though, it's breaks up all the gloom and doom news that they run all the time about what's happening on earth.
Actually, every little atom of you will still be around, and every atom of you has been around for the first 8 billion years they mention. You may not feel like yourself, however.
In before the JESUS freaks! JESUS will return to save us! LOL
Damn @MarcNJ! You ruined my moment! LOL
I do what I can. lol
Gawd will save us. Praise Jeebus.
our fate? Not mine. I plan on checking out before then.
Not me. I plan to watch it. On CNN, live, of course.
That picture is not the Andromeda Galaxy..geez how hard is it to get that correct.
The picture at the top of this article is not the Andromeda Galaxy, despite what the picture's caption claims.
right, Andromeda is much more impressive
Oh noooooooosss
So, how does this jive with the christian's "heaven on earth" theory?
Christians don't have theories. They simply use their gut. "Gee, I'm really special, so I cannot cease to exist! Hence, there is a life after death!"
WRONG PHOTO – That is not the Andromeda Galaxy.
Apparently, that's the pic NASA/ESA give them, for Andromeda.
If Andromeda and Milky Way were first moving away from each other, what changed to have them colliding? Are all galaxies moving at the same rate or are all of matter speeding up (expanding universe) at different rates.
Then there is the whole dark energy/dark matter. Too many questions to begin. My layman's thought is that dark {insert name} moves faster than light and is the lead wave from the big bang center pulling our slower not-so-dark matter along.
I read enough to be dangerous but not enough to know anything.
The andromeda galaxy is relatively close to us so our mutual gravity is attracting us to one another. Most galaxies are moving away but some are close enough to creates groups.
Does not make sense unless we or Andromeda added mass 8M years ago. I think gravity worked the same prior to that so something had to change especially if we are expanding away from other galaxies. Condensation of matter into dense bodies does not seems it since the total mass would be the same.
Did Andromeda collide with another galaxy?
Consider this TM. If you shoot something in the air it needs a certain velocity to break free of the earth gravity. If not it falls back, yet originally it was in fact moving away. This may be what's happening between us and Andromeda. We did not reach escape velocity. Also, it does appear that some parts of our universe do move at varying speeds so some parts can collide. But over all, as a mass, the universe is accelerating apart to infinity.
I think by your definition there, the universe is in a continual state of expansion and contraction. Since all matter is connected through gravity it's like a ball on a rubberband, no matter how hard you hit it and how far it goes, eventually it will use up it's energy and begin coming back to the paddle. Creating bangs and expansions forever and ever.
The universe has an outer edge though, and if that's the case what's beyond?
HAS to be Galactic Road Rage. We just don't know which galaxy flipped off the other after passing 180 billion years ago.
or maybe they just needed to clear the way for a new hyperspace bypass