Imagine a massive celestial body colliding with Uranus at high speed; this impact could have 'overturned' Uranus, causing its rotation axis to tilt. Moreover, the colliding body would have to be ...

A mysterious object traveling through our solar system may have emitted a signal, according to a scientist. This enigmatic ...

Discover the 9 rarest moons in the solar system, from Saturn’s Titan to Neptune’s Triton. Learn about their unique phases, ...

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...

Caltech researchers have developed a new simulation of the hydrological cycle on Jupiter, modeling how water vapor condenses ...

Using Pluto as an example, this celestial body, once considered the ninth planet, was redefined as a dwarf planet in 2006.

Astronomers have been fascinated after spotting an object earlier this year that came from interstellar space as is now hurtling through our inner solar system. Regardless, it’s an interesting visitor ...

Chrysalis, a 36-mile rotating space habitat, plans to take 2,400 people to Alpha Centauri in approximately 400 years.

The official number of planets outside our solar system has reached 6,000, according to space scientists. Get any of our free email newsletters — news headlines, sports, arts & entertainment, state ...

SKYWATCH: This year marks the 50th anniversary of the discovery, just inside Jupiter’s orbit, of Kohoutek, a comet synonymous with unfulfilled expectations.