The mystery of how Pluto got a giant heart-shaped feature on its surface has finally been solved by an international team of astrophysicists. The team is the first to successfully reproduce the ...

Although Seeing in the Dark doesn't directly discuss Pluto, it does celebrate the joy of observing planets. Viewers who watch the show may wonder what happened to Pluto in 2006 and whether any of the ...

It’s been 18 years since Pluto’s celestial status was called into question—yet the matter seems far from settled. We asked experts from both sides to make their case. This 2015 NASA image of Pluto ...

In this except from "Space Camp," a special series from NPR science podcast Short Wave, host Regina Barber delves into Pluto's demotion from planet to dwarf planet. It's not exactly news to say that ...

The New Horizons spacecraft is only hours away from its closest approach to Pluto. It’s hoped the brief encounter will help answer many questions about the oddball member of our solar system. Pluto is ...

NASA's New Horizons spacecraft captured this image of Pluto's surface shrouded in atmospheric haze. (Credit: NASA/JHUAPL/SwRI) The first observations of Pluto by NASA’s James Webb Space Telescope ...

Debate has raged for two decades over whether Pluto should be considered a planet. Some want President Trump to take action ...

A researcher has used advanced models that indicate that the formation of Pluto and Charon may parallel that of the Earth-Moon system. Both systems include a moon that is a large fraction of the size ...