Did this supernova explode twice?

All supernovae are exploding stars. But the nature of a supernova explosion varies quite a bit. One type, named Type 1a supernovae, involves a binary star where one of the pair is a white dwarf. And while supernovae of all ...

Ancient cracked mud found on Mars

A recent study published in Nature examines how mud cracks observed on Mars by NASA's Curiosity rover could provide insight into how life on the red planet could have formed in its ancient past.

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