NASA Administrator Jared Isaacman, the billionaire entrepreneur and former astronaut, is once again pushing for a planetary ...

A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere. That would make it the solar ...

A new tiny ice world has been discovered beyond Pluto surrounded by a thin atmosphere, scientists revealed.

Astronomers have detected a thin atmosphere around a tiny celestial body in the outer solar system for the first time — an ...

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

This could change everything. The post Scientists Detect Atmosphere on Planet-Like Object Beyond Pluto appeared first on ...

Two decades ago, the International Astronomical Union—which defines and names celestial bodies—redefined the criteria for ...

Pluto was believed to be the only body beyond Neptune with an atmosphere. Now, a new discovery in our solar system is ...

Is Pluto a planet? At a U.S. Senate committee hearing this week, NASA's chief shared his thoughts on the decades-long debate.

Astronomers have detected the chemical fingerprint of a frozen, water-rich planetary fragment being devoured by a white dwarf star, offering the clearest evidence yet that icy, life-delivering objects ...