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

NASA astronauts Butch Wilmore and Suni Williams are finally back on Earth after spending more than nine months in orbit on ...

A small, cool star in distant space plays host to something ... years (235 trillion miles) from Earth. The planetary haul -- which includes at least six rocky planets total, three of which were ...

An international team led by researchers in Japan and Europe has discovered a new multi-planet system around a Sun-like star, ...

MAROON-X was specifically designed to detect tiny exoplanets orbiting red dwarf stars by detecting the minuscule ...

NASA astronauts Sunita Williams and Barry Wilmore may face certain effects on their health upon returning to Earth after nine ...

Musk has been working to retrieve the astronauts after they were left behind on the ISS due to malfunctions with their ...

The U.S. military's top-secret X-37B space plane has returned from a mysterious 434-day mission in orbit. The enigmatic ...

A planetary alignment can be used to describe various outer space phenomena. But in the case of the planets in our solar ... higher than the horizon, as the Earth's atmosphere can dim celestial ...

Earth is our home planet, and it's the only place in the ... which begins the transition into outer space. Human activity has a huge effect on climate and weather in Earth's atmosphere.