Pluto's unusual eccentricity and tilt is likely due to its interactions with neighboring Neptune and other giant planets, said Renu Malhotra, a planetary scientist at the University of Arizona who has ...

Traditional views hold that Pluto formed in the cold Kuiper Belt, gradually accumulating ice and rock. Over the long ages, the decay of radioactive elements within the rocks released heat, gradually ...

At the vast edge of the solar system, Pluto has long been perceived as a cold and lonely dwarf planet. However, a recent ...

NASA's Hubble Space Telescope detected material from a Pluto-like body spiraling into a white dwarf star 260 light-years away ...

Pluto, once considered the ninth planet of our solar system, has been a topic of intrigue since its reclassification as a dwarf planet. Recent observations suggest that its atmosphere is expanding, ...

Images of Pluto captured by NASA's New Horizons mission have revealed a new surprise: ice volcanoes. The spacecraft performed a flyby of the dwarf planet and its moons in July 2015, and the insights ...

NASA explains Pluto's newly discovered "blue sky" and whether or not potential astronauts could ever witness an Earth-like sunrise. The New Horizons space probe sent back its first color images of ...

New Horizons sends back best photos yet as probe closes in on Pluto. New color images from NASA’s New Horizons spacecraft show two very different faces of the mysterious dwarf planet, one with a ...

A landmark on Pluto that was previously designated as an impact crater may actually be the caldera of a supervolcano that has exploded in the past few million years, new research suggests. But not ...

This close up look at Pluto and Charon, taken as part of the mission's latest optical navigation ("OpNav") campaign from Jan. 25-31, 2015, comes from the Long Range Reconnaissance Imager (LORRI) on ...

"Makemake is one of the largest and brightest icy worlds beyond Neptune, and its surface is dominated by frozen methane," ...