With the race for clean energy intensifying, scientists are revisiting an old idea: harvesting the Sun’s power from space ...

Earth has a number of mini-moons and quasi-moons. Mini-moons are objects that orbit our planet. But they make for fickle fans: They tend to swing around Earth for only a matter of months. One example ...

TRAPPIST-1e, 40 light-years away, may have an Earth-like atmosphere, raising hopes for habitability beyond our solar system.

Since astronomers found the first planets outside our solar system in 1992 and the first planet around a sunlike star in 1995 ...

Scientists have found thousands of planets outside our solar system, called exoplanets, throughout the galaxy. This artist’s ...

Three missions aimed at observing space weather are set to launch Sept. 23 from Florida. Here's what to know about NASA's ...

Astronomers might be close to confirming the presence of an Earth-like atmosphere on an exoplanet for the first time, ...

Some are no bigger than pebbles, while others stretch for miles, silently orbiting the sun in the asteroid belt or zipping ...

Astronomers were fascinated after spotting an object from interstellar space hurtling through the solar system earlier this ...

For decades, astronomers have wondered whether Earth-like planets are rare gems or commonplace across the stars. Recent ...

American space agency NASA announced this week the counter showing the number of confirmed exoplanets has now reached over ...

Analysis by researchers at the University of Bern suggests that water and other volatile compounds arrived on Earth from ...