Researchers believe they have rediscovered a mysterious star system first spotted in 2011. If true, the alien sun and its ...

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

For the first time, astronomers have imaged dozens of belts around nearby stars where comets and tiny pebbles within them are ...

These embryos, somewhere between small planetesimals and fully formed planets, were abundant during the solar system's formative ... but the size of the [parent body] is disputed." ...

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

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

The article humorously imagines how planets would describe themselves if they were dating profiles. Each planet has a unique ...

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

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.

Most of the information we have about planets beyond our solar system (exoplanets ... This technique can give clues about the planet's size (by looking at how much starlight is blocked) and ...

Jan. 21, 2025 — Astronomers have discovered extremely powerful winds pummeling the equator of WASP-127b, a giant exoplanet. Reaching speeds up to 33,000 km/h, the winds make up the fastest jet ...

The planet, dubbed TOI-6038A b, is a dense sub-Saturn size with a mass of 78.5 Earth masses and a radius of 6.41 Earth radii in a wide binary system.