As more of the solar system has been explored and imaged, all kinds of geographical features have been mapped on many of our ...

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

Mar. 17, 2025 — A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system, according to a new ... Webb Telescope Captures Its ...

Astronomer Eliza Kempton said that she had waited her "entire career" to peer into an atmosphere from this mysterious class ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

Researchers say they found a curious dot on infrared images taken 23 years apart that seems to be moving in a manner ...

Astronomers believe that our solar system may still hold surprises, with ongoing efforts to find a hidden ninth planet, often referred to as Planet Nine or Planet X. If confirmed, this discovery ...

but both men previously suggested a “Planet X” existed in the far reaches of the solar system. “It’s kind of fun that a paper that purports to find a candidate for Planet Nine is really ...