The rare encounter revealed a distant world with giant ice sheets, mountains, valleys, and terrains unlike any other seen in ...

For years, Pluto was viewed as a distant, frozen world whose dramatic landscapes seemed locked in time. A new study published ...

Discovered in 1930 at the Lowell Observatory, Pluto was demoted as a planet in 2006. Some want President Trump to take action via executive order.

Scientists have detected evidence of landslides on Pluto for the first time. A paper published in the journal Icarus reports ...

February 18 marks the discovery of Pluto by astronomer Clyde W. Tombaugh. The discovery reshaped the understanding of the solar system, as Pluto was long considered the ninth planet until the ...

Add Yahoo as a preferred source to see more of our stories on Google. Guests visting the Lowell Observatory in Flagstaff, Arizona during the I Heart Pluto Festival gaze at celestial objects from the ...

Add Yahoo as a preferred source to see more of our stories on Google. On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...

An image of Pluto taken by NASA's New Horizons spacecraft on July 13, 2015. The planet was first discovered by Clyde Tombaugh, who graduated from high school in rural Kansas and went on to earn his ...

Pluto was downgraded from a planet to a dwarf planet in 2006 by the International Astronomical Union. NASA Administrator Jared Isaacman has stated his support for President Trump to take action to ...