For the last month and change, you might've seen the headlines about the planetary alignment, or a planetary parade, going on in our solar system. And that's true. In January 2025, Venus, Mars, ...

Planets usually stay close to their host stars, tracing steady paths shaped by gravity. Yet some planets break free and drift ...

While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets seem to have been knocked out of their orbits, floating through space free ...

For the first time, astronomers have directly measured the mass of a rogue planet, a celestial body wandering through space ...

A rare alignment of two exoplanets with their star, marking one of the few known exosyzygies, an astronomical event involving ...

A lucky alignment of space- and ground-based telescopes has enabled researchers to nail down the mass of a rogue planet for the first time. Unlike worlds in our Solar System, rogue planets do not ...

INDIANA, USA — As soon as the sun sets, step outside and look up to witness a rare celestial event: full planetary alignment. Between Feb. 23 and Feb. 28, 2025, all seven planets will align in the ...

INDIANA, USA — Stargazers, mark your calendars! A rare seven-planet alignment will be visible in the early night sky in late February 2025. While we’ve enjoyed a six-planet alignment since mid-January ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the discovery of Pluto in the 1930s. Labeled as planet X, prominent astronomers ...