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by William Atkins
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Saturday, 17 October 2009 |
THE NASA spacecraft IBEX is making a map of the edge of the heliosphere, the magnetic boundary formed by the solar wind and interstellar matter at the edge of the solar system. Unexpectedly, IBEX imaged a "bright, winding ribbon of unknown origin" that goes about 80% away around the solar system.
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by William Atkins
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Friday, 16 October 2009 |
The Indian Chandrayaan-1 spacecraft discovers that the Moon absorbs rays from the Sun in order to create water on its lunar surface. Surprisingly, though, some of them are reflected back into space. Learn why this is important in our continuing investigation of our local solar system and the much larger universe.
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by William Atkins
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Wednesday, 14 October 2009 |
The Hubble Space Telescope has just revealed a gigantic collision of two spiral galaxies about 250 million light-years away from our own Milky Way galaxy. Check out the images of the resulting "bright and bizarre" galaxy that astronomers are calling NGC 2623.
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by William Atkins
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Sunday, 11 October 2009 |
Although spectators were disappointed by not seeing the debris plumes after two space vehicles crashed into a lunar crater on Friday, October 9, 2009, NASA scientists saw the collision with infrared instruments and are hopeful they recorded incidences of water on the Moon.
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by William Atkins
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Friday, 09 October 2009 |
NASA astronomers have revised their estimates as to the likelihood that near-Earth asteroid 99942 Apophis will impact Earth in the year 2036. The chance for a collision has gone from 1-in-45,000 (0.0022%) to 1-in-250,000 (0.0004%). Whew! I feel better!
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