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UARS is down, but ROSAT coming down, too!

Science - Space

NASA's UARS satellite fell to Earth early Saturday morning somewhere over the Pacific Ocean. But, Germany's ROSAST satellite is getting ready to re-enter Earth's atmosphere and come crashing to Earth. It's due back in October-November 2011.


NASA's Upper Atmospheric Research Satellite (UARS) re-entered Earth's atmosphere around midnight Friday evening - somewhere between 11:23 p.m. Eastern Daylight Time (EDT) Friday and 1:09 a.m. EDT Saturday, September 24, 2011.

NASA and the military tracked the satellite as it fell. They suspect it fell into the Pacific Ocean off the North American west coast, but aren't sure.

Some media reports wonder 'How can NASA lose a satellite?' It is explained by knowing how these satellites are tracked.

They are tracked with ground-based radar systems and optical sensors at multiple sites around the world. In some cases, none of these systems are able to track a particular satellite due to being out of range.

This is probably what happened to UARS. The tracking stations lost it on its downward trip to Earth, and these organizations were unable to pinpoint its exact crash site.

Check out MSNBC's article 'NASA satellite meets its fiery doom over Pacific Ocean' for more on the story.

Now that UARS is down, another satellite is getting ready to make a deorbit from space and into Earth's atmosphere and eventually for a crash landing somewhere on Earth.

Page two continues with this other satellite ready for an uncontrolled reenter into Earth's atmosphere and to an unknown location on Earth.