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 ...

In a solar system far, far away, astronomers have discovered evidence of possible "sibling" planets sharing the same orbit. The researchers detected a cloud of debris in the same orbital path as an ...

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.

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 found ...

This image, taken with the Atacama Large Millimeter/submillimeter Array (ALMA), shows the young planetary system PDS 70, located nearly 400 light-years away from Earth. Astronomers have discovered ...

"Co-orbital planets are 'fossils' of the planetary formation processes; at present, they are like unicorns." When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

The International Astronomical Union defines a planet as a celestial body that orbits the sun, is massive enough that gravity has forced it into a spherical shape, and has cleared away other objects ...

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 bizarre cosmic pairing, long ...