Tag: "Deep Impact"

NASA's Cosmic Two-For-One Deal:  A Return to Comet Tempel 1

NASA's Cosmic Two-For-One Deal: A Return to Comet Tempel 1

On February 14, 2011, NASA encountered the comet Tempel 1 using the recycled Stardust spacecraft. For the first time in history, they visited the same comet twice – affording them the opportunity to observe changes in the icy body.

 
An Asteroid's Close Call

An Asteroid's Close Call

This has been a month of dashed hopes for astronomers around the world. Last month it seemed possible that an asteroid the size of a Boeing 737 jet was due to collide with Mars on January 30. Today that seems far less likely, but, as Amy Standen reports, astronomers consider it a wake up call. [...]