A short video released by NASA uses images taken from the Dawn spacecraft to simulate the experience of orbiting the dwarf planet Ceres, the largest known object in the main asteroid belt between Mars ...

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

Twenty years ago, Pluto lost its planet status, a decision that still sparks debate. Today, NASA's new chief, Jared Isaacman, ...

New NASA research hints that Ceres — the closest dwarf planet to Earth — may have once had an ancient "power source" that could have sparked the evolution of extraterrestrial life-forms in the tiny ...

The NASA administrator’s latest remarks in support of reexamining Pluto’s status come 20 years after the orb was downgraded to a dwarf planet by the International Astronomical Union ...

NASA Administrator Jared Isaacman wants to put an end to a decades-long debate among scientists. Is Pluto a planet or not? Isaacman says it should be — but it hasn’t been one for 20 years. That’s ...

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NASA chief Jared Isaacman said at a US Senate hearing that he supports restoring Pluto's status as a planet after a controversial 2006 demotion.

NASA Administrator Jared Isaacman, the billionaire entrepreneur and former astronaut, is once again pushing for a planetary promotion. Isaacman’s focus revolves around the far-off icy world of Pluto, ...

NASA’s Hubble Space Telescope recently discovered a small moon orbiting an icy dwarf planet in the distant reaches of our solar system. MK 2 is 100 miles in diameter and is at least 13,000 miles from ...