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 ...

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

Mercury is the closest planet to the sun, followed by Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Mercury orbits ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

WASP-121b is like nothing in the solar system, raining liquid metal and being puffy like a marshmallow. The origins of these ...

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

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

HD 20794 d completes its orbit just shy of two Earth years, placing it well within reach of conditions that might harbor life ...

The finding, reported in the science journal Geochimica et Cosmochimica Acta, is significant because the data reported by the ...

Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

Scientists found an intriguing world in our galaxy.