The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer planets of our solar system.

Astronomers have made a groundbreaking discovery in the WASP-132 system, finding two new planets that defy previous ...

15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything ... a clearer picture of how the outer solar system formed and evolved based on ...

The building blocks of life could have been delivered to Ceres by one or more space rocks from the outer asteroid belt.

Early 2025 is a good time for skygazing and spotting up to seven planets in the night sky – if you have a little help.

The organic material found in a few areas on the surface of dwarf planet Ceres is probably of exogenic origin. Impacting ...

The dwarf planet ... from the outer asteroid belt may have brought it with them. In the journal AGU Advances, a group of researchers led by the Max Planck Institute for Solar System Research ...