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

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

NASA said the system is thought to be moving at least 1.2 million miler per hour, nearly twice as fast as our solar system.

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

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

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

Astronomers may have discovered a scrawny star bolting through the middle of our galaxy with a planet in tow. If confirmed, ...

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

February will be an awe-inspiring month for astronomy enthusiasts who will be able to the see the solar system's planets ...

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

It is not often that all the planets in the Solar System other than ours are lined up across the night sky for us to see.