Pluto's 2006 status change from planet to dwarf planet is still a sore subject for many, including a fourth grader in Tampa, ...

Astronauts and robotic spacecraft have captured breathtaking photos of Earth from space for decades. See the best images.

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...

The JWST discovers an impossible anomaly on TOI-5205 b and challenges everything we thought we knew about giant planets.

Scientists are observing an Earth-like exoplanet that may contain water using NASA's James Webb Space Telescope, the space agency said in a news release. The exoplanet, known as TRAPPIST-1 e, orbits ...

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the edge of our solar system, evading all our efforts to spot it. Some astronomers ...

Forbes contributors publish independent expert analyses and insights. Monica is an entertainment reporter covering TV, film, and music. “Set several generations in the future following Caesar’s reign, ...