A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

Astronomers discover an unusual neutron star that emits double pulses, challenging theories about stellar remnants.

Astronomers measure a star’s brightness using the apparent magnitude system, where lower values indicate brighter stars.

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

The package includes three cameras, providing three unique views of space around the ISS and Earth below. A wide angle lens captures the long curve of Earth's horizon, with the occasional piece of ...

Private citizens and companies may one day begin to permanently settle outer space and celestial bodies. But if we don’t ...

A newly discovered asteroid has a tiny chance of striking Earth in 2032. NASA and the European Space Agency said Wednesday ...

An exoplanet is a planet outside our solar system that usually orbits a star in our galaxy. More than 7,000 have been found ...