The faraway exoplanet could help provide answers as to why there are hardly any planets with twice the diameter of Earth.

The private Fram2 mission is launching later today, sending a crew of amateurs to an unprecedented polar orbit—a frontier ...

Life could have the time and energy to arise and prosper on Earth-like worlds in the rapidly shrinking "Goldilocks zones" ...

The findings provide strong evidence that four giant exoplanets 130 light-years from Earth formed much like Jupiter and ...

Astronomers used ALMA to observe Proxima Centauri and found frequent, intense flares that could destroy atmospheres of nearby ...

Proctor/J. Pollard A quartet of Earth-like worlds, each about 20% to 30% the size of our planet, circle one of our closest ...

Our planet's closest and brightest neighbor will pass approximately between the Earth and sun this week, in what's called an ...

Needham native and astronaut Sunita Williams, along with fellow astronaut Butch Wilmore, spoke Monday for the first time ...