One Pluto year equals 248 Earth years. At 1473 miles in diameter—about half the width of the United States—Pluto is the ...

With discoveries about Pluto from NASA’s New Horizons mission rolling in, here are nine of the most interesting facts about the former planet. 1. Pluto was first discovered by a young research ...

Pluto's orbit: Quick facts Pluto's rotation is retrograde compared to the solar systems' other worlds; it spins backward, from east to west. Average distance from the sun: 3,670,050,000 miles ...

Pluto is a dwarf planet; humans declared it to be one in 2006 since it is so small. It has little “ice mountains” on the surface. Scientists think the inside is actually water. Pluto’s ...

Jess Thomson is a Newsweek Science Reporter based in London UK. Her focus is reporting on science, technology and healthcare. She has covered weird animal behavior, space news and the impacts of ...