When the New Horizons spacecraft swept past Pluto and Charon in 2015, it revealed two amazingly complex worlds and an active ...

The first observations of Pluto by NASA's James Webb Space Telescope (JWST) reveal dramatic phenomena on its surface, like ...

For the unversed, "Planet Nine" is a hypothetical planet which is reportedly larger than Earth that is thought to orbit ...

James Webb Space Telescope observations suggest Pluto’s atmosphere is unlike any other in the solar system, confirming a 2017 ...

While the James Webb Space Telescope looks for the most distant galaxies ever seen, astronomers have discovered something new ...

June is highlighting your personal foundation and desire for “more,” Capricorn. After Mercury’s debut in Cancer, and your ...

The International Astronomical Union’s Minor Planet Center, which catalogs new moons and other small bodies in the solar ...

During the month of June you will be able to see Mercury, Venus, Mars, Saturn, Neptune and Jupiter in the sky at different ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...

Discovery of 2017OF201, a large trans-Neptune Object, challenges previous beliefs about the Kuiper Belt and hints at the existence of a theoretical Planet Nine.

Scientists had previously believed that no celestial bodies existed in the vast, empty section of space beyond Neptune.