The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ... .</ ...

Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ...

Beethoven basin is just visible along the eastern edge of the globe. Pluto is the largest dwarf planet in our solar system, just slightly larger than Eris, at number two. Pluto has an equatorial ...

To everyone who was happy about Pluto's planetary demotion, consider this: If Earth rode the same orbital highway as Pluto, it too would be a dwarf planet ... did Ceres and Eris and as many ...

That changed in 2006 when the International Astronomical Union declared that the faraway orb was a dwarf planet due to its location ... including Eris, Haumea and Makemake, all of which have ...

For the current study, the researchers looked for previously unknown deposits of organic material on dwarf planet Ceres. With its location in the middle of the asteroid belt between the orbits of ...

So Pluto became what we now call a dwarf planet, along with Eris and along with a whole bunch ... like this is if there was a planet in this location with this mass, a lot of people would be ...

In 2005, Eris was discovered. It was considered the largest known dwarf planet in the solar system until a year later when Pluto was downgraded from being a planet. In 2008, tribal violence ...

“One popular hypothesis is that the planets originally were in a more compact configuration; the TNOs formed between them and were scattered outwards when the planets moved to their current locations ...

It changes the first two requirements for a planet: orbiting any star or brown dwarf, and having a mass higher than 10 23 kilograms. Pluto and Eris remain excluded, but maybe it could lead to a ...