A "free-floating planet" drifting through space approximately **10,000 light-years** from Earth has been jointly detected by South Korean and European observation networks, revealing its exact ...

Most planets spend their lives orbiting a star, but some are destined for exile. According to a study published in Science on Jan. 1, 2026, astronomers have successfully measured the mass and distance ...

Our planet whirls around the sun in an ellipse, rather than a circle. On Thursday the planet reached its farthest point from its star, known as aphelion. By Katrina Miller This article was originally ...

With this new survey, astronomers have gained a peek inside a stage of exoplanet system formation they have yet to fully ...

Since the 1990s, scientists have discovered approximately 6,100 planets outside our solar system, called exoplanets.