"Makemake is one of the largest and brightest icy worlds beyond Neptune, and its surface is dominated by frozen methane," ...

Pluto may have been demoted to non-planet status, but it still commands a court of five moons, as is fitting for the king of ...

Webb uncovers methane on Makemake, showing the icy dwarf planet is more active than once thought - just like Pluto.

The James Webb Space Telescope (JWST) has discovered that a hazy sky over frozen Pluto is helping to cool the dwarf planet's atmosphere, while at the same time giving methane and other organic ...

Two of Pluto's midsize moons may be made of the guts of its largest moon, Charon, new research suggests.

Makemake is about 890 miles wide, roughly two-thirds the size of Pluto. Early observations indicated it had almost no atmosphere—essentially just a little air, if any. However, Webb's powerful ...

Oumuamua, the first interstellar object detected in 2017, is most likely a fragment of a Pluto-like body. Scientists believe it was flung out of the solar system billions of years ago during its ...

The astronomical phenomenon of Pluto's opposition reoccurred on the 25th, providing astronomy enthusiasts with the best opportunity to observe this distant celestial body throughout the year. During ...

What can the presence of methane on a dwarf planet that orbits farther out than Pluto teach scientists about the formation ...

The methane emission is explained by solar-excited fluorescence. Sunlight interacts with methane molecules, causing them to ...

Pluto might be small and distant, but it keeps surprising scientists. After the New Horizons spacecraft zipped past it in 2015, we got our first real look at its icy landscape and unexpectedly active ...

A new trans-Neptunian object, 2017 OF201, has been found with a vast orbit and potential dwarf planet size. The finding hints ...