During a recent space storm simulation, the Earth was hit by the biggest geomagnetic storm in 20 years, helping NASA predict ...

NASA concluded a balloon mission in which a super-pressure balloon circumnavigated the Earth over the southern hemisphere ...

Pointed away from Earth about 404 miles overhead, the orbital observatory will circle the planet from north to south about 14 ...

The day has become 0.06 microseconds longer, and the Earth's axis has shifted by about 2 cm due to the Chinese Three Gorges ...

Astronomers are once again getting excited about a rare nova that could appear in the night sky anytime from now into the ...