The Earth now has another moon to tag along during its orbit around the Sun. Astronomers found out that the Earth has two ...

In a real-life twist on Star Wars' Tatooine—a harsh desert planet with twin suns and a criminal underbelly—astronomers have found a bizarre new world that orbits two stars at a perfect right angle.

The vast majority of exoplanets that have been discovered are within star systems broadly similar to our solar system: one (or sometimes two or more) stars at the center, with planets orbiting at a ...

A time-lapse video captures Beta Pictoris b orbiting its host star about 63 light-years away from Earth. Credit: Jason Wang / Northwestern University Some space events happen too slowly to see, but a ...

CAPE CANAVERAL, Fla. (AP) — Astronomers reported Wednesday the discovery of what could be two planets sharing the same orbit around their star. They said it’s the strongest evidence yet of this ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

An ALMA telescope image shows two potential exoplanet bodies that appear to orbit a star on the same orbit. Credit: ALMA (ESO / NAOJ / NRAO) / Balsalobre-Ruza et al. Astronomers think they've ...

comets and dwarf planets (including Pluto) that orbit the sun beyond the eight known planets — but has so far evaded ...

In a delightful alignment of astronomy and mathematics, scientists at MIT and elsewhere have discovered a “pi Earth” — an Earth-sized planet that zips around its star every 3.14 days, in an orbit ...

The newly identified world, named TOI-4507 b, is located around 578 light-years away and orbits a remarkably young star ...