The giant planets weren't always where we find them today. Jupiter, Saturn, Uranus and Neptune formed in a more compact ...

Not every large object in space forms part of a solar system. There are some big objects that exist in isolation in space, without either being a star or orbiting one. One of these, SIMP 0136, wanders ...

Two years ago, astronomers believe they detected a star devouring one of its planets. Now, new observations of the aftermath of same event from the James Webb Space Telescope have suggested a scenario ...

About 880 light-years from Earth, a hot mess of an exoplanet is slowly spilling its atmosphere into space, creating two ...

A team of astronomers claims to have sniffed out a “biosignature” in the atmosphere of a distant planet called K2-18b. But not everyone agrees that it signals life. An illustration shows what ...

Astronomers using the James Webb Space Telescope have captured dramatic helium streams pouring off the super-puff exoplanet ...

A possible cousin of Pluto seems to be circling the far reaches of the solar system. The dwarf planet candidate 2017 OF201 travels in a superwide orbit, with the sun relatively near one end of its ...

A Hidden Tatooine-like world has been found. The discovery sheds new light on how planets form and survive in extreme ...

A rocky planet in the Milky Way galaxy may have an atmosphere, raising the possibility that life could exist on its surface, according to experts. TRAPPIST-1e, a planet belonging to a collection of ...

The planet, called HIP 67522 b, is a wispy, Jupiter-size planet bound on a tight, seven-day orbit around its host star, HIP 67522. But these orbits are disturbing the star's magnetic field, causing ...

Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of Earth’s mantle and ejecting a huge debris disk that later formed the moon.

This week's science news was led by a spate of climate stories that were as worrying as they were fascinating. Topping the bill are microbes that were woken up after lying frozen in the Alaskan ...