The system is believed to be traveling at least 1.2 million miles per hour (1.93 million kilometers per hour), according to a ...

Astronomers may have discovered a scrawny star bolting through the middle of our galaxy with a planet in tow. If confirmed, ...

NASA's Europa Clipper mission has launched to study Jupiter's icy moon Europa, which may harbor a potentially habitable ocean ...

Sea-based launches are hitting their stride. That could lead to a lot more space missions with a lot less red tape.

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Mashable is a global, multi-platform media and entertainment company.