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

Why is Pluto no longer a planet? Discover the real reason behind Pluto’s reclassification as a dwarf planet and the science that led to this change.

Pluto isn't alone—it's part of the Kuiper Belt with possibly hundreds of other planet-sized objects. Because Pluto hasn't ...

However, against all the odds, there are a couple of dwarf planets out there which contain evidence of vast oceans. Named ...

Eris is three times more distant than Pluto. And its relationship to Pluto — a world demoted since 2006 from the solar system’s ninth planet to a lowly dwarf planet, in large part due to the ...

According to a recent YouGov poll, 35% of Americans think Pluto is not a planet. But they are all wrong—kind of. To get to ...

The theory could explain how the dwarf planet (yeah, we wish Pluto was still ... other large Kuiper Belt Objects with large moons, like Eris and Dysnomia, Orcus and Vanth, and the others," Denton ...

They range in size from the dwarf planet Eris, which has a diameter of about 2,300 km, down to the size of pebbles. Sixteen have a diameter of 240 km or greater. Asteroids are classified according to ...

Increasing number of likes on chroma key. 3D modeling Eris (dwarf planet) on a white background. Concept 3d render science element 3D modeling Eris (dwarf planet) on a white background. Concept 3d ...

The building blocks of life could have been delivered to Ceres by one or more space rocks from the outer asteroid belt.

Gaia-4b and 5b: Radial Velocity Confirmation of Gaia Astrometric Orbital Solutions Reveal a Massive Planet and a Brown Dwarf Orbiting Low-mass Stars. The Astronomical Journal , 2025; 169 (2): 107 ...