The "spiders" are actually features in the Martian crust called "araneiform terrain," and scientists now understand how they might have formed.

Researchers have recreated the bizarre spider-like features seen on the surface of Mars for the first time ever. The ...

An enormous plume of magma is slowly but steadily rising underneath Mars and could one day provoke an eruption of the solar system's tallest volcano. An enormous plume of magma over a thousand miles ...

The first NASA spacecraft dedicated to studying an ocean world beyond Earth, Europa Clipper aims to find out if the ...

ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

Astronomers have discovered an enormous exoplanet in the Great Bear constellation. The newly identified planet is referred to ...

By Deane Morrison During, Mars and Jupiter continue to go their separate ways, widening the gap between them from 9 to 23 degrees. Both planets are surrounded by bright stars usually seen on winter ...

Europa Clipper is officially slated to launch on October 10, a month from today, following crunch-time reviews of the ...

Studies of gravity variations at Mars have revealed dense, large-scale structures hidden beneath the sediment layers of a ...

NASA on Monday approved next month's launch to Jupiter's moon Europa after reviewing the spacecraft's ability to withstand ...