Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

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 before shoving four of the solar system's planets onto a different course.

Scientists suggested the enormous object disrupted the orbits of Jupiter, Saturn, Uranus and Neptune, which would explain the peculiarities of these four planets' paths. Prevailing solar system ...

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 ...

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

How fast can solar systems orbit our Milky Way Galaxy? This is what a recent study published in The Astronomical Journal hopes to address as an internation | Space ...

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

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

The OSIRIS-REx mission returned to the sample to Earth in September of 2023, and these studies show that it contains amino ...