The cosmos is filled with wonders yet to be discovered. One of the latest mysteries captivating scientists and space ...

"That was based on some irregular motions, or apparent irregular motions, of [Uranus and Neptune]." He called this hypothetical world "Planet X." "In some ways, Pluto's more of a planet than some ...

When we have five or more planets filing into a small sky area, an alignment is upgraded to parade status. Parade is not an ...

A stunning planet parade is now visible in the night sky. A planet parade is when several of our solar system's planets are ...

Neptune, Pluto. Pluto was last and least of them. An icy dwarf only half the size of the United States, it was on average 3.7 billion miles from the sun. It also has a decidedly strange orbit that ...

Everybody loves a parade. Most people who live in chillier climes aren’t exactly rejoicing when February rolls around — but ...

For decades, it captivated imaginations with its icy surface and distant orbit beyond Neptune. But in 2006, Pluto’s planetary reign came to an end when the International Astronomical Union ...

of [Uranus and Neptune]." Breaking space news, the latest updates on rocket launches, skywatching events and more! He called this hypothetical world "Planet X." "In some ways, Pluto's more of a ...