Supernovas are powerful explosions marking the death of massive stars. They spread elements like carbon, calcium, and iron ...

A new study reveals that supernova explosions may have caused two mass extinctions on Earth 372 million and 445 million years ...

They spread calcium and iron, the same stuff found in bones and blood, across interstellar space. This dispersal seeds new generations of stars and planets. This is what astronomer Carl Sagan meant ...

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The radio star strutted her stuff backstage on set and shared the stunning snippets over on Instagram. She captioned her post: "Semi-final on @dwtsirl!!! Great fun and completely off the walls crazy.

Clarke and Carl Sagan (who became a celebrity ... And paradise, like outer space, is the stuff of dreams.

Texas has major aspirations as championship contenders and if they are going to achieve them, they need their star healthy when ... he still has ace-caliber stuff that leaves opponents baffled.

So, how did Eiselen end up doing all this? “I went to high school in Malaysia, and I came back with this idea I can be a TV star in Asia," he said. Eiselen studied Chinese at Dartmouth ...