Hubble spots white dwarf star 'snacking' on chunk of Pluto-like object. The NASA/ESA Hubble Space Telescope has spotted a ...

The spacecraft is currently approaching the outer boundary of the solar system as it prepares to cross into interstellar space.

Those who supported Pluto’s demotion included Neil DeGrasse Tyson ...

Dennis Hope boldly declared himself the owner of the Moon and embarked on a unique venture of selling lunar land worldwide.

On Aug. 24, 2006, the International Astronomical Union (IAU) decided that Pluto wasn't a planet anymore. Instead, Pluto is now officially classified as a dwarf planet along with four other confirmed ...

Pluto lost its planethood for a very specific reason. Whether or not that’s a good reason depends on who you ask.

Pluto is a 2-year-old male shepherd mix. He is current on his vaccines, heartworm tested and soon to be neutered and ...

The discovery of the Kuiper Belt revealed thousands of icy objects near Pluto, challenging its status as a planet. After the discovery of Eris, astronomers formally redefined “planet” in 2006, leading ...

A 24-year-old observatory assistant from the Midwest discovered Pluto. Clyde Tombaugh, born in 1906 in Streator, Illinois, grew up fascinated with the solar system. A self-taught astronomer, he built ...

Learn how Pluto nearly kept its planet status in a proposed 12-planet Solar System as its demotion marks its 20th anniversary.

Picture a star, about half the sun's mass shining with a dim red light. Lumbering around it on a 5,000-year orbit is a huge orb called a brown dwarf, which is much heavier than a planet but still not ...