NASA's deep space probe 'New Horizons' has discovered five big things about the little-understood Pluto. What are they?

The James Webb Space Telescope (JWST) has discovered that a hazy sky over frozen Pluto is helping to cool the dwarf planet's atmosphere, while at the same time giving methane and other organic ...

A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere that may have been created by ...

The finding offers fresh insight into our solar system’s farthest, coldest objects in a region known as the Kuiper Belt.

A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere that may have been created by ...

PHOENIX – The Pluto Discovery Telescope at Lowell Observatory has reopened for the first time in a year after undergoing renovations. The telescope in Flagstaff was made famous on Feb. 18, 1930 when ...

The instrument at Lowell Observatory used by Clyde Tombaugh to discover Pluto will soon undergo renovation. The year-long project, set to begin on January 12, will include restoration of both the ...

A gradual dimming and brightening when a star passed behind it suggested the mini-Pluto was wrapped in a thin layer of air.

Add Yahoo as a preferred source to see more of our stories on Google. Pluto was discovered 95 years ago on Feb. 18, and even though it was demoted nearly two decades ago, it remains a fascinating part ...