NASA's Perseverance Mars rover was treated to a "googly eye" solar eclipse as the planet's moon Phobos passed in front of the sun. Phobos — one of Mars' two moons, along with the even tinier Deimos — ...

Mercury, Venus, and Mars sit within the same general neighborhood as Earth, yet each has followed a radically different path. One kept a magnetic field against the odds. Another trapped so much heat ...

This summer, scientists spotted an incredibly rare visitor to Earth’s solar system—a comet, now known as 3I/ATLAS, that entered our solar system from the galaxy beyond and is zipping past the sun at a ...