Astronomers may have discovered a scrawny star bolting through the middle of our galaxy with a planet in tow. If confirmed, ...

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

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

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

While this parade of planets look to our eyes to be huddled in the evening sky, they are of course spread out across a vast chasm of space across the solar system, separated from each other by ...

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

Mercury takes only 88 Earth days to orbit the sun.

New research shows that star activity can distort exoplanet measurements, affecting size, temperature, and atmosphere ...

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

Jan. 15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System. This provides another piece of the puzzle to ...

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

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.