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

The James Webb Space Telescope has captured a belching protostar in its infancy. By studying the dust grains whirling around ...

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

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

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

If the solar system had a corporate structure, Jupiter would be the CEO, while Saturn ensures rules are followed. Venus ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

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

These embryos, somewhere between small planetesimals and fully formed planets, were abundant during the solar system's formative stages and played a critical role in planetary formation.

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

To better understand why the planets have variable compositions ... to the formation of the gas and ice giants in the outer solar system. This first-order model of planetary growth in the solar ...