Researchers have found a candidate for the hypothetical Planet Nine, which could be an undiscovered giant planet way out in our solar system. However, as with all ninth planet research, the new ...

Vesta, thought to be the second-largest asteroid in the solar system, could be a piece of an ancient, unknown planet, a new study hints.

If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

Astronomers have detected a promising sign of a ninth planet lurking at the the farthest reaches of the Solar System.

Astronomers using the James Webb Space Telescope have directly detected the faint glow of a planet that’s colder than any ...

They reveal a whole new level of detail in these planet-forming systems. Breakthroughs, discoveries, and DIY tips sent every ...

The school-bus-sized observatory launched on April 24, 1990 and overcame early setbacks to become one of the most ...

Astronomers have spotted a small rocky planet that orbits perilously close to its host star disintegrating as its surface is ...

Scientists have detected potential evidence of life on K2-18b, a distant exoplanet. A Cambridge team using NASA’s James Webb Space Telescope found molecules in its atmosphere that, on Earth, are ...

Kornmesser/ESO via AP) NEW YORK (AP) — A new Tatooine-like planet outside the solar system may orbit two failed stars ... A light year is nearly 6 trillion miles. The brown dwarf pair was first ...

A team of astronomers led by the University of Cambridge has detected the chemical fingerprints of possible signs of life on a planet outside the solar system. Using data from the James Webb Space ...

Exoplanet orbits binary stars at a 90-degree tilt Discovered using ALMA and VLT telescopes Orbit challenges planetary formation theories ...