Stargazers will get a peek at what's been called a "parade of planets," when up to seven planets may appear to line up.

Traveling from one star to another is currently impossible to achieve within a human lifetime. But some projects are ...

This NASA/ESA Hubble Space Telescope image reveals a tiny patch of sky in the constellation Hydra. The stars and galaxies ...

Six planets will all be visible at once in the night sky this month, lined up across the sky—but one is set to disappear from view.

Pluto likely acquired large moon Charon in a “kiss and capture” collision billions of years ago. It may have created a subsurface ocean on the icy dwarf planet.

An event called a "ring plane crossing" will occur between Saturn and Earth on March 23, 2025, when Saturn's rings will ...