New findings offer clues about the ancient origins of asteroids and their potential role in the formation of terrestrial ...

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

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

It is not often that all the planets in the Solar System other than ours are lined up across the night sky for us to see.

Mars's moon Phobos is so strange that no one knows how it formed. But a forthcoming mission could solve this mystery - and a ...

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

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

Astronomers discovered the gas giant planet — dubbed a "hot Jupiter " — in 2016, but have continued to investigate this ...

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

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...

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

The planetary parade in February 2025 will see five bright planets in clear view and a special alignment of Mercury and Saturn ...