Uranus' new moon, S/2025 U1, was discovered in February 2025 and is approximately 6 miles in diameter, orbiting Uranus at a ...

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many ...

The debate over Pluto’s planetary status has been ongoing since its reclassification as a “dwarf planet” in 2006 by the ...

You know, if you think about it, and trust me we're about to, the moon is kind of weird. Of all the terrestrial worlds of the ...

In Roman mythology, Pluto is the god and ruler of the dead. For a return mission to the dwarf planet, Howett and her ...

With a diameter of 1,440 miles, Pluto is farthest from the sun. While major planets make roughly circular orbits, Pluto ...

Pluto and its moon Charon may have been briefly locked together in a cosmic “kiss”, before the dwarf planet released the smaller body and recaptured it in its orbit.

Charon, its biggest of five moons, was discovered in 1978 by the U.S. Naval Observatory. At about 750 miles wide, it's half the size of Pluto — extremely large for a moon.

Pluto likely acquired large moon Charon in a “kiss and capture” collision billions of years ago. It may have created a subsurface ocean on the icy dwarf planet.

The icy volcanism of Pluto's large moon Charon and a belt of fractures across its surface may have been caused by a subsurface frozen ocean bursting through a thin ice shell.

An online vote to name Pluto’s two newest, itty-bitty moons is over. And No. 1 is Vulcan, a name suggested by actor William Shatner, who played Capt. Kirk in the original "Star Trek" TV series. Vulcan ...

Possible New Moons for Pluto Hubble Space Telescope Detects 2 Small Satellites By Guy Gugliotta October 31, 2005 at 7:00 p.m. EST ...