Explore the vastness of the Solar System in this video, which accurately showcases the relative sizes of the planets and ...

The African Union endorsed a map that reflects the truer relative size of the continent. (map public domain via Equal Earth) Already a member? Sign in here. We rely on readers like you to fund our ...

Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional payments each time you use that ...

Planetary size was determined pre-spacecraft by measuring the planet's angular diameter and its distance from Earth (in AU, later converted to terrestrial units after the AU was accurately measured ...

Scientists did not find a robust atmosphere around TRAPPIST-1d, an Earth-size exoplanet many hoped would show signs of having air. Credit: NASA / ESA / CSA / J. Olmsted illustration As scientists ...

A giant planet the size of Saturn orbiting a sun-like star has potentially been identified in our nearest neighbouring stellar system, Alpha Centauri. At just four light years from Earth, Alpha ...

As many as 200 worlds beyond our solar system discovered by astronomers may be larger than estimated, which could influence the search for extraterrestrial life. That's the theory of a team of ...

An exoplanet orbiting close to its host star triggers violent flares that are destroying its atmosphere, according to new research from the European Space Agency's Cheops mission. A gas giant planet ...

An exoplanet orbiting close to its host star triggers violent flares that are destroying its atmosphere, according to new research from the European Space Agency's Cheops mission. Credit: Janine ...

Planets may begin forming much earlier than scientists once believed during the final stages of a star s birth, not afterward. This bold new model, backed by simulations from researchers at SwRI, ...

Jupiter is shown in visible light for context, with an artistic impression of the Jovian upper atmosphere’s infrared glow overlain, along with magnetic field lines ...