SPACE PHOTOS THIS WEEK: Monster Galaxies and More

SPACE PHOTOS THIS WEEK: Monster Galaxies and More
SPACE PHOTOS THIS WEEK: Monster Galaxies and More
SPACE PHOTOS THIS WEEK: Monster Galaxies and More
SPACE PHOTOS THIS WEEK: Monster Galaxies and More
SPACE PHOTOS THIS WEEK: Monster Galaxies and More
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SPACE PHOTOS THIS WEEK: Monster Galaxies and More
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May 5, 2009--NASA's STEREO spacecraft observed a big coronal mass ejection that generated a radio burst, the first one observed in more than a year. (Related: "First 3-D Pictures of Solar Explosions Created.".)

The source of the mass ejection--a type of large solar storm--is an active solar region seen in bright green (pictured).
— Image courtesy Solar and Heriospheric Observatory, NASA
 

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