B finally form a communication and navigation system spanning from low Earth orbit to distant retrograde orbit.

China has successfully deployed the world's first three-satellite constellation on the distant retrograde orbit of the ...

The program would support China's future lunar exploration mission, including providing space-based inter-satellite ...

A team behind the rescue of two lunar satellites left stranded by a launch anomaly have revealed the challenges they faced in ...

Scientists have launched the first three-satellite constellation into different orbits between Earth and the Moon to study ...

K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know ...

The basic idea is that you send a beam of light around a pair of black holes spinning around each other prior to a merger, or a single black hole spinning quickly, and use the higher-energy ...

The trans-Neptunian object Altjira, 44 times farther from the Sun than Earth is, could be the second known trinary, confirming a theory about the formation of our solar system.