When the International Astronomical Union (IAU) demoted Pluto from a planet to a dwarf planet in 2006, it surprised a lot of people, including some scientists. Even many years later, some astronomers ...

Once the quirky underdog of our solar system, Pluto held planetary status until 2006, when it got a cosmic demotion that still stings space fans. Discovered in 1930, Pluto was the ninth planet for ...

In this except from "Space Camp," a special series from NPR science podcast Short Wave, host Regina Barber delves into Pluto's demotion from planet to dwarf planet. It's not exactly news to say that ...

The planet Neptune wobbled in its orbit around the Sun. That could only mean one thing, astronomers said: There was a ninth planet out there, somewhere, lurking in the fringes of the solar system.

The definition of a planet has been a hot topic ever since a change kicked Pluto out of our planetary lineup in 2006. Now, a group of researchers is proposing a new definition yet again—one with much ...

Pluto was discovered at Lowell Observatory in Flagstaff, Arizona in 1930 and was considered our ninth planet until 2006. The International Astronomical Union reclassified Pluto as a dwarf planet ...

February 7, 2025 Add as a preferred source on Google Add as a preferred source on Google We are less than two weeks away from the 95th anniversary of the discovery of Pluto, the ice-caked, rocky ...

These icy bodies orbit the sun just like the major planets, yet they follow their own rules, often traveling along elongated ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute ...