August 25th, 2011
12:17 PM ET

Hurricane Irene

GOES-13 captures Hurricane Irene on the morning of August 25. The storm is now measured to be approximately one-third the size of the east coast of the United States.

You can track Irene on CNN.com.
See NASA's storm data.


Filed under: Hurricanes • On Earth
August 25th, 2011
11:36 AM ET

A Tale of Three Galaxies

"Arp 274, also known as NGC 5679, is a system of three galaxies that appear to be partially overlapping in the image, although they may be at somewhat different distances. The spiral shapes of two of these galaxies appear mostly intact. The third galaxy (to the far left) is more compact, but shows evidence of star formation.

Two of the three galaxies are forming new stars at a high rate. This is evident in the bright blue knots of star formation that are strung along the arms of the galaxy on the right and along the small galaxy on the left.

The largest component is located in the middle of the three. It appears as a spiral galaxy, which may be barred. The entire system resides at about 400 million light-years away from Earth in the constellation Virgo.

Hubble’s Wide Field Planetary Camera 2 was used to image Arp 274 in april 2011. Blue, visible and infrared filters were combined with a filter that isolates hydrogen emission. The colors in this image reflect the intrinsic color of the different stellar populations that make up the galaxies. Yellowish older stars can be seen in the central bulge of each galaxy. A bright central cluster of stars pinpoint each nucleus. Younger blue stars trace the spiral arms, along with pinkish nebulae that are illuminated by new star formation. Interstellar dust is silhouetted against the starry population. A pair of foreground stars inside our own Milky Way are at far right."

Souce: NASA

Filed under: Light up the screen
August 25th, 2011
09:32 AM ET

Hurricane Irene over the Bahamas

This image, captured by NASA's Terra satellite, shows Hurricane Irene over the Bahamas at 11:05 a.m. EDT on August 24.

You can track Irene on CNN.com.
See NASA's storm data.


Filed under: Hurricanes • Light up the screen • On Earth

Contributors

  • Elizabeth LandauElizabeth Landau
    Writer/Producer
  • Sophia DengoSophia Dengo
    Senior Designer