Dark streaks along Pluto’s giant nitrogen glacier may mark places where liquid nitrogen recently reached and flowed across ...

For the first time since its discovery in 1920, Pluto is entering the outer solar system—a journey that’s slowly thinning out ...

Researchers say dark streaks along the heart's rim are actually stains left by liquid nitrogen that recently seeped through ...

A new analysis of New Horizon images of the Sputnik Planitia, a section of Pluto’s massive, heart-shaped glacier, suggests ...

Liquid nitrogen on Pluto is now supported by the first physical evidence: a SwRI-led study published July 31 in the Planetary ...

As Pluto edges further away from the sun, the chilly temperatures are causing its atmosphere to condense onto its barren surface as frost.

Pluto is on an icy march away from the sun. In 2114, it will turn back, but until then, its elliptical orbit will carry it to ...

The mystery of how Pluto got a giant heart-shaped feature on its surface has finally been solved by an international team of astrophysicists led by the University of Bern and members of the National ...