As astronomers continue discovering unusual worlds beyond our solar system, many say the question that divided scientists in ...

Pluto TV’s refreshed app, built on the same underlying platform as Paramount+, is now reaching Roku players and Roku TVs as part of a wider rollout. The free ad-supported service and the paid ...

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

Pluto lost its status as a planet, becoming a dwarf planet. While some, like Neil DeGrasse Tyson, agreed with the move to demote Pluto, which was discovered in 1930, both schoolchildren and many ...

On the 20th anniversary of Pluto’s infamous demotion, Mike “Pluto Killer” Brown explains why any reversal of that decision would be driven more by nostalgia than science ...

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 ...

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 ...

In 1992, while searching for another object in the vicinity of Pluto for five years, astronomers David Jewitt and his then-graduate student Jane Luu (Vietnamese: Lưu Lệ Hằng), discovered a small icy ...

NASA chief Jared Isaacman has doubled down on his stance that Pluto is without a doubt a planet. For two decades, controversy has surrounded the distant icy world after it was infamously stripped of ...

A Southwest Research Institute (SwRI)-led research team has discovered evidence of liquid nitrogen rising to the surface of Pluto through cracks in the dwarf planet’s heart-shaped glacier, Sputnik ...

A frozen methane-nitrogen world (illustrative). Image: Zelch Csaba / Pexels. At 5.113 micrometers, the reflected infrared light from Titan drops by several percent. The same narrow part of the ...