Kristen Bobst

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Weird star's atmosphere is almost pure oxygen

​What is Yuri's Night?

What is an asteroid worth?

Everything you need to know about ExoMars

​Can these physicists create an engine propelled by antimatter?

​Watch the trailer for J.J. Abrams' 'Moon Shot'

​In March, the night sky boasts 2 eclipses and an extra-bright Jupiter

​Scott Kelly to return from a year in space

Physicist Brian Greene explains gravitational waves to Stephen Colbert

You can see galaxies from your computer

We just found a black hole 21 billion times more massive than the sun

The evolving media reaction to female astronauts