New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known ...

Astronomers propose a giant, hidden planet beyond Neptune to explain odd orbits of distant Kuiper Belt objects.

Researchers from the University of Houston, led by Dr. Xinyue Wang, launched a deep probe of Uranus’ data — and determined ...

For reference, Pluto’s average distance from the Sun is about 40 AU, so 2023 KQ14 is quite distant. At 23.4 billion miles (37 ...

New observations fail to confirm signs of life in the atmosphere of the distant planet K2-18b. They also raise questions ...

The Very Large Telescope in Chile has found, for the first time, an infant planet nestled in spiral arms of dust around a ...

The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

K2-18b, a planet more than double the size of Earth that orbits a distant red sun, is at the center of a growing debate as researchers at Cambridge University's Institute of Astronomy dissect ...

Astronomers had detected just a hint, a glimmer of two molecules swirling in the atmosphere of a distant planet called K2-18b — molecules that on Earth are produced only by living things.

An alien invasion is about to hit FX on Hulu. Mark your calendars! Alien: Earth will debut with two episodes on Aug. 12 at 8 p.m. ET/PT on FX and Hulu, and will air every subsequent Tuesday until ...