Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

While our solar system is a fascinating place on its own, exoplanets are even more of a mystery. And one exoplanet in particular is something quite new.

NASA has just made a groundbreaking discovery—a new planet beyond Neptune that wasn’t there before! This mysterious find ...

Astronomers at NASA have caught a glimpse of a star system whipping through space at an unprecedented speed. While the system ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

Six planets are part of the alignment, which will last until Feb. 18. Mercury will join the alignment later in the month.

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...

The four-planet lineup that began in January concludes by mid- to late February, as Saturn sinks increasingly lower in the sky each night after sunset, according to NASA. While Mercury will briefly ...

On any given night, it's likely that knowledgeable stargazers will be able to spot at least one bright planet shining in the night sky. Because they don't happen every year, such cosmic displays ...

The agency announced on Monday afternoon (Feb. 10) that it has picked SpaceX to launch Pandora, a 716-pound (325-kilogram) ...

The four-planet lineup that began in January concludes by mid- to late February, as Saturn sinks increasingly lower in the ...