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 before shoving four of the solar system's planets onto a different course.

Scientists at the Physical Research Laboratory (PRL) in Ahmedabad have made a significant discovery, identifying a new ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

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

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 ...

On Feb. 24, from west to east, you can see Mercury, Saturn, Neptune, Venus, Uranus, Jupiter and Mars, all spanning 117.5°, ...

She mapped our solar system's "alternate fate" had it housed ... When simulating a planet 10 times the size of Earth's mass, Simpson found that the inner planets experienced high obliquity and ...