Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

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

Titan is the only moon in our solar system with a significant atmosphere. Now we have a very good idea of how this dense ...

This may explain the strange properties of the orbits of our solar system's planets, which are not quite perfectly circular, and all lie on slightly different planes. NASA artist’s conception of ...

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

Jan. 15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System. This provides another piece of the puzzle to ...

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

However, this year a powerful new telescope is coming online that could prove once and for all that there really is a ninth planet in our Solar System. The same year that Pluto was ignominiously ...

But as far as we know, no other bodies in the solar system exhibit ... But without any other nearby planets exhibiting plate tectonics to compare Earth's system to, it's hard to know precisely ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...