Billions of years ago, Mars’ Jezero Crater held a lake fed by rivers that could have carried minerals and maybe even organic matter. On Earth, places like that are teeming with microbial life. NOVA is ...
A red giant star and white dwarf orbit each other in this animation by NASA and the Goddard Flight Center of a nova similar to T Coronae Borealis. The red giant is a large sphere in shades of red, ...
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