Astrobiologist Barry DiGregorio fears astronauts on Mars could die "live on air" after being exposed to deadly alien ...

NASA’s Mars Global Surveyor spacecraft beamed back images of what appear to be hearts on the surface of a neighborly planet.

Astronomers have discovered a companion star in an incredibly tight orbit around Betelgeuse using the NASA and U.S. National ...

It is Betelgeuse and for hundreds of years astronomers have puzzled why its twinkle grows lighter and then dimmer over time.

Betelgeuse, the red supergiant star closest to Earth, has finally been proven to have a companion star in observations from ...

Betelgeuse is one of the brightest stars in the night sky, and the closest red supergiant to Earth. It has an enormous volume ...

The NASA-ISRO joint mission NISAR is finally launching this month. The Indian space agency confirmed to India Today that the Earth-observation satellite will launch on July 30 atop the GSLV Mark II ...