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.

If you have kids in school, or even if you don’t, you’ve probably realized that there’s a lot about the day-to-day of school ...

Anomalous orbits of Kuiper Belt objects, studied since 2016 by Caltech’s Michael Brown, point to the gravitational pull of an unseen planetary body. Locating Planet X involves monitoring vast ...

As the gatekeepers to the Kuiper Belt, Charon and Pluto are a unique double dwarf planet system ... Pluto has a mass of 1.3 x 10 22 kilograms and a diameter of 1,477 miles (2,377 kilometers ...

"It is totally amazing to see a comet from orbit," he said on X, formerly known as Twitter ... sun beyond Neptune in a disk known as the Kuiper Belt, or on the outer edge of the solar system ...

Named after the icy Kuiper Belt extending from Neptune's orbit, the Project Kuiper constellation will work similarly to Starlink once all of the satellites arrive in low earth orbit. Although it ...

Behind the planets in the solar system is the Kuiper Belt. An inventory of similar structures around other stars shows how unusual it is. A research team has used several telescopes to take images ...

On this date, Jan. 19, 2006, the first probe ever destined to visit Pluto, its moons and other Kuiper belt objects launched ... year journey to the icy dwarf planet. This mission marked the ...

Asteroids, comets and Kuiper belt are bodies smaller than planets that orbit the sun. Asteroids are composed of metals and rock, whereas comets also contain ice and dust. The Kuiper belt is a ...

Some are narrow rings, as in the canonical picture of a 'belt' like our Solar System's Edgeworth-Kuiper belt. But a larger number of them are wide, and probably better described as 'disks' rather ...

Some are narrow rings, as in the canonical picture of a 'belt' like our solar system's Edgeworth-Kuiper belt. But a larger number of them are wide, and probably better described as 'disks' rather ...