Astronomy & Space - Space Exploration news

The difference between CMEs and solar flares

This is a question we are often asked: what is the difference between a coronal mass ejection (CME) and a solar flare? We discussed it in a recent astrophoto post, but today NASA put out a video with amazing graphics that explain ...

Sep 23, 2014
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Where should the European Mars rover land?

Picking a landing site on Mars is a complex process. There's the need to balance scientific return with the capabilities of whatever vehicle you're sending out there. And given each mission costs millions ...

Sep 04, 2014
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PanSTARRS K1, the comet that keeps going

Thank you K1 PanSTARRS for hanging in there! Some comets crumble and fade away. Others linger a few months and move on. But after looping across the night sky for more than a year, this one is nowhere near ...

8 hours ago
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NASA image: Flying through an aurora

European Space Agency astronaut Alexander Gerst posted this photograph taken from the International Space Station to social media on Aug. 29, 2014, writing, "words can't describe how it feels flying through ...

Sep 10, 2014
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Image: Crescent Mimas

A thin sliver of Mimas is illuminated, the long shadows showing off its many craters, indicators of the moon's violent history.

Sep 16, 2014
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