Signs of a planet transiting a star outside of the Milky Way galaxy may have been detected for the first time. This intriguing result, using NASA’s Chandra X-ray Observatory, opens up a new window to ...

Astronomers have spotted a free-floating ‘rogue’ planet, named Cha 1107-7626, that is going through a massive growth spurt, ...

One of the most notable properties of the giant planets in our solar system—Jupiter, Saturn, Uranus and Neptune—are the ...

Some planets may be soot-rich rather than water-based. Atmosphere studies will be key to understanding their true nature. Astronomers generally consider water worlds to be among the most common types ...

There could be planets around the supermassive black hole at the heart of our galaxy – and we may be ready to find them, scientists say. That hope comes after researchers found the first ever binary ...

NASA’s Hubble Space Telescope has discovered 16 extrasolar planet candidates orbiting a variety of distant stars in the central region of our Milky Way galaxy. The planet bonanza was uncovered during ...

Space scientists look back on 30 years of exoplanet discoveries — from rows of massive ‘super-Earths‘ to worlds with ...

So the question remains: Do red dwarf stars make our galaxy a lush and vibrant garden or a sparse desert? Do TRAPPIST-1’s planets have atmospheres? This is what astronomers set out to determine in ...

A free-floating planet has been seen devouring astonishing amounts of matter, hinting that stars and planets are more alike ...

WASHINGTON — Scientists have estimated the first cosmic census of planets in our galaxy and the numbers are astronomical: at least 50 billion planets in the Milky Way. At least 500 million of those ...