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

Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.

Astronomers are uncovering distant worlds beyond our solar system using ingenious indirect methods like observing stellar ...

New high-contrast images from SPHERE show a stunning variety of debris disks shaped by collisions of tiny planet-building ...

The cold and remote planets originally earned their label of "ice giants" to contrast their interiors from those of Jupiter ...

Rocky planets like our Earth may be far more common than previously thought, according to new research published in the ...

Interstellar comet 3I/ATLAS makes its closest Earth approach on Dec. 19, offering astronomers a rare chance to study a visitor from beyond the solar system ...

Fantasizing about interplanetary exploration is a fun mental exercise, but the harsh realities of life (or lack thereof) in ...

CAPE CANAVERAL, Fla. — Astronomers have discovered a rare solar system in the Milky Way that boasts six planets orbiting in perfect rhythm like a cosmic orchestra, untouched by outside forces since ...

Still, science being science, we needed proof—and we got it in 1992, when two astronomers found two planets orbiting a pulsar 2,300 light years from Earth. Since then, over 6,000 confirmed exoplanets ...

This gas cloud located 500 light years away from our solar system is about to become a planet.This process usually takes a ...

A spectacular total solar eclipse, one of the century's longest, will plunge parts of Spain, North Africa, and the Middle ...