The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Explore Ceres, the largest asteroid in our solar system, and discover its remarkable ancient ocean and ice-rich crust.

Does our Solar System have 9 planets or only 8? Astronomers have gone back and forth on that a lot, with Pluto now being classified as a dwarf planet. However, out beyond Neptune there could be ...

For decades, Pluto was celebrated as the ninth planet of our solar system. However ... leading to Pluto’s reclassification as a dwarf planet. This decision sparked widespread debate among ...

Scientists have been unable to determine whether the dwarf planet’s organics were produced by its own chemical processes or ...

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

"Our Sun (Sol) is marked by a black hexagon, and its orbital path is indicated by a grey solid line (top row only). Alpha Centauri's location and path are shown by a yellow star and a solid blue line ...

Enaiposha orbits a red dwarf star 47 light years away from our own Earth, upending previous theories of how planets are formed and structured and giving scientists a tempting window into the ...

Gaia-4b is considered a super-Jupiter planet, a relatively cold gas giant, orbiting its star over 570 Earth-days. That star ...

Using the Keck Planet Imager and Characterizer ... and the peculiar architecture of the whole system. For this purpose, they observed this brown dwarf with KPIC at high spectral resolution.

Explore the impact of stellar flares on the potential for alien life. Discover how higher levels of UV radiation can both ...