Moscow at Night
April 19th, 2012
07:01 PM ET

Moscow at Night

"Moscow appears at the center of this nighttime image photographed by the Expedition 30 crew aboard the International Space Station, flying at an altitude of approximately 240 miles on March 28, 2012. A solar array panel for the space station is on the left side of the frame. The view is to the north-northwest from a nadir of approximately 49.4 degrees north latitude and 42.1 degrees east longitude, about 100 miles west-northwest of Volgograd. The Aurora Borealis, airglow and daybreak frame the horizon."

Source: NASA

Filed under: Light up the screen
Space Shuttle Discovery Arrives at Udvar-Hazy
April 19th, 2012
06:56 PM ET

Space Shuttle Discovery Arrives at Udvar-Hazy

"Space shuttles Enterprise, left, and Discovery meet nose-to-nose at the beginning of a transfer ceremony at the Smithsonian's Steven F. Udvar-Hazy Center, Thursday, April 19, 2012, in Chantilly, Va. Space shuttle Discovery–the first orbiter retired from NASA’s shuttle fleet, completed 39 missions, spent 365 days in space, orbited the Earth 5,830 times, and traveled 148,221,675 miles–will take the place of Enterprise at the center to commemorate past achievements in space and to educate and inspire future generations of explorers at the center."

Source: NASA

Filed under: Light up the screen
April 19th, 2012
01:23 PM ET

Overheard on CNN.com: 'This was my space shuttle moment,' reader says of Discovery

Editor's note: This post is part of the Overheard on CNN.com series, a regular feature that examines interesting comments and thought-provoking conversations posted by the community.

Star-struck space lovers gazed skyward Tuesday to watch space shuttle Discovery's journey to Washington after a series of nostalgic fly-bys on the back of a NASA Boeing 747. The flight departed from Florida's Kennedy Space Center en route to Dulles International Airport in Virginia. It will spend its retirement at a Smithsonian National Air and Space Museum facility in Chantilly, Virginia.

Space shuttle Discovery arrives in Washington

The photo at the top was shot by rocket technician Danny Mills of Cape Canaveral, Florida, who joined several other iReporters in documenting the shuttle's journey from point A to point B. Mills went over to Cocoa Beach to see the shuttle. He used an often-mentioned word to describe his feelings.

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Filed under: Commentary • On Earth
April 19th, 2012
11:22 AM ET

Gadget implant aims to solve gorilla mystery

"Good. Hold," said great ape keeper Amanda Bania to the 200-pound gorilla Kojo as she held what looked like a computer mouse to his back.

The western lowland gorilla leaned his back against his cage at the National Zoo in Washington while being hand fed grapes by zookeeper Elliot Rosenthal.

“Kojo is pretty happy to hold as long as he’s getting grapes,“ said Bania. She then downloaded heart data from an Implantable Loop Recorder (ILR) that had been surgically placed between Kojo's shoulder blades to track his heart rates and rhythms.

While Kojo was chowing on fruit, he was also providing valuable data to help scientists solve a scientific mystery: why do gorillas have problems with their hearts?

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Filed under: On Earth • Scientific mysteries

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