A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...

Our solar system is much like a trail of microcosmic breadcrumbs: Follow the molecular bits as far back as they go, and you'll learn a thing or two about where many of our planets and other celestial ...

Dwarf planet Ceres, the unpleasant lump of icy rock orbiting between Mars and Jupiter, once had an environment in which microbes might have thrived.… So says a paper titled “Core metamorphism controls ...

Astronomers using the Hubble Space Telescope have observed a white dwarf - a highly compact stellar ember - that appears to have gobbled up an icy world akin to the dwarf planet Pluto, a finding with ...

Astronomers using the Hubble Space Telescope have uncovered the remains of a frozen, Pluto-like world being devoured by a ...

Dwarf planet Ceres now appears less like a dead rock and more like a world that may have briefly brimmed with potential for life Ceres, the largest object in the asteroid belt between Mars and Jupiter ...

For all the talk about life across the cosmos, Earth remains the only confirmed example. That single data point makes your ...

"It shows that Makemake is not an inactive remnant of the outer solar system, but a dynamic body where methane ice is still ...

The methane gas may constitute a rarefied atmosphere, or it may come from erupting plumes on Makemake’s surface.