Scientists at NASA for the first time have been able to observe the make up of Pluto and other small and icy celestial bodies ...

Suddenly, in photos taken six days apart in January ... Over millions of years, that atmosphere escaped into space. Pluto is the only place in the solar system where we can study something ...

"Pluto is showing us a diversity of landforms and complexity of processes that rival anything we've seen in the solar system." As the craft continues to transmit photos back to Earth, scientists ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

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

It’s thought to be populated by icy objects and comets, believed to be remnants left over from the formation of the solar system. ForbesIn Photos ... photographed dwarf Pluto in 2015—the ...

The Pluto fly-by caps a half-century of solar-system exploration that has yielded ... decencies of civilization — taking close-up pictures and chemical readings of a mysterious world nine ...

For decades, Pluto was celebrated as the ninth planet of our solar system. However, in 2006, the International Astronomical ...

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

If planets had social media accounts, the solar system would showcase a frenzy of unique personalities. Mercury tweets at ...