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Study illuminates fates of distant planetary atmospheres

When telescopes became powerful enough to find planets orbiting distant stars, scientists were surprised to see that a lot of them didn't have atmospheres like Earth's. Instead, they appear to have thick blankets of hydrogen.

Friendly giants have cozy habitable zones too

It is a well-known fact that all stars have a lifespan. This begins with their formation, then continues through their main sequence phase (which constitutes the majority of their life) before ending in death. In most cases, ...

Greenland's viking settlers gorged on seals

Greenland's viking settlers, the Norse, disappeared suddenly and mysteriously from Greenland about 500 years ago. Natural disasters, climate change and the inability to adapt have all been proposed as theories to explain ...

How mighty Jupiter could have changed Earth's habitability

Is Jupiter a friendly planet, Earth's enemy, or perhaps both? For decades, scientists have talked about how the giant gas planet keeps some asteroids from striking our small world, while others have pointed out that Jupiter's ...

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