Four small, newly discovered worlds are less than six light-years away from Earth, and their discovery reinforces a ...

The best opportunity to potentially see all seven planets is coming up on Feb. 28 around 6:10 p.m. ET, according to Shanahan. Mercury, which is the closest planet to the sun, would be the first to be ...

A rare celestial event on Feb. 28 will offer skywatchers the chance to witness a "planet parade" of all seven planets in our solar system outside of Earth. It's the last time this type of planetary ...

A rare celestial event on Feb. 28 will offer skywatchers the chance to witness a "planet parade" of all seven planets in our solar system outside of Earth. It's the last time this type of ...

NASA's James Webb Space Telescope was recently used to capture direct images of four Saturn-like exoplanets in a solar system 130 light-years away.

Measles is peaking for the first time since 2019, and you might be asking, where are my vaccine records? Here's what to know.

Since the 1980s, a strange X-ray emission has puzzled astronomers. At the heart of the Helix Nebula, a dying star may have destroyed a neighboring planet, revealing a rare and spectacular phenomenon.