NASA's Juno spacecraft has again captured stunning images of Jupiter and its moon Io, providing more insights into the solar ...

The Moon has long been the Earth's close companion ... This process is called "tidal heating." It is how Jupiter currently heats up its moon Io, the most volcanically active spot in the solar ...

There are currently 92 moons known to orbit Jupiter. The four largest – Io, Europa, Ganymede and Callisto – were ... Galileo realised that there are satellites which, like Earth's moon, orbit another ...

A new study implies that in the past, moons in our solar system may have had rings just like planets do — deepening the ...

The Moon is far older than we once believed — but its fiery past has kept its true age hidden. New research reveals that, a ...

So I grabbed my camera, ran outside, and looked up just as Mars was supposed to emerge from the Moon's curved horizon. Seen ...

Galileo Galilei's telescopic discovery of Jupiter's four moons in 1610 revolutionized astronomy and supported heliocentric ...

Europa was one of four moons discovered on Jan. 7, 1610, by astronomer Galileo Galilei. Speaking of Galileo, this photo was ...

The moon will pass closely by Jupiter this evening (Jan. 10), meeting up with the gas giant in the constellation Taurus.

Glimpses of a Volcanic World: New Telescope Images of Jupiter's Moon Io Rival Those from Spacecraft ... could lead to a better understanding of Earth's own space environment and influence a ...

Mars will seem to disappear behind the full wolf moon Monday for many sky-gazers. Throughout January, also look up to see ...