Stargazers in the U.S. will see Jupiter rise above the eastern horizon roughly two hours before sunrise on Aug. 8, with Venus visible as a bright morning "star" less than 5 degree ...

Scientists have found strong evidence of a giant gas planet which could have habitable moons in the nearest star system to ...

Electrons released when cosmic rays strike water-ice can provide energy for microbes and facilitate the formation of complex ...

NASA’s Europa Clipper spacecraft just aced a key radar test while flying past Mars, proving its ability to detect structures ...

Europa’s surface chemistry hints at life-supporting conditions below. Lab tests reveal how peroxide forms in unexpected ...

The test validated JUICE's RIME radar, which will explore Europa, Ganymede, and Callisto for signs of life under their frozen ...

The Mars flyby in March was primarily to use the planet's gravitational pull to tweak the Europa Clipper's trajectory.

American space agency NASA says it used the gravity assist maneuver the Europa Clipper conducted back in March to test the ...

From a half-million miles away, NASA's Europa Clipper spacecraft captured Mars with its two moons, Phobos and Deimos, in ...

One of the brightest stars in the night sky seems to be orbited by a planet like Jupiter. The news is sure to cheer fans of the Avatar series, which centers on a moon that orbits a fictional gas giant ...

Look east around 4 a.m. local time, just before dawn, to see the slender form of the crescent moon climb above the horizon.

NASA's Europa Clipper nailed a major radar test during a Mars flyby, proving it’s ready to peer into Europa’s mysterious icy ...