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

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

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

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

This solar system consists of four inner rocky planets and four outer gas giant planets as well as an asteroid belt, containing thousands of huge rocks, dwarf planets and comets. Our solar system ...

There may be an undiscovered planet in the outer solar system whose presence is revealed by the strange orbit of objects beyond the eighth planet Neptune. The tantalizing prospect of a ninth ...

There are trillions of charged particles—protons and electrons, the basic building blocks of matter—whizzing around above ...

"We are the first mission to be able to track space weather events in three dimensions routinely across the solar system." ...

The intensity of this inner nebular field was somewhere between ... haven't been many samples that could tell us about the outer solar system," Mansbach says. The team got an opportunity to ...