Two decades ago, the International Astronomical Union—which defines and names celestial bodies—redefined the criteria for ...

Should Pluto be a bona fide planet again? NASA is working to "revisit the discussion" on Pluto's planethood status, according ...

A new paper from NASA's Backyard Worlds: Planet 9 project announces that volunteers have essentially doubled the number of ...

The head of NASA says maybe Pluto is a planet after all. He is wrong because Pluto is part of the rest of the solar system ...

Citizen scientists working with NASA have helped identify more than 3,000 brown dwarfs—dim, elusive objects that sit between ...

Pluto's 2006 status change from planet to dwarf planet is still a sore subject for many, including a fourth grader in Tampa, Florida. Credit: NASA / Johns Hopkins University Applied Physics Laboratory ...

Exoplanet science and the search for life beyond Earth continue to advance at break-neck speeds, with the number of confirmed exoplanets by NASA rapidly approaching 6,300, with 223 of those exoplanets ...

Pluto just picked up a powerful ally: the head of NASA. Testifying before a Senate panel on the 2027 NASA budget Tuesday, ...

For four years, NASA’s planet-hunting telescope photographed the light of 2.2 million stars. The data sat in public archives, ...

Coming in 10th place, with 2.5 per cent of all mentions on the thread, is Quantum Leap, the 1989 US series starring Scott ...

Is Pluto a planet? NASA Administrator Jared Isaacman told Congress on Tuesday, April 28, that Pluto should be recognized as a ...