New close-up images of Pluto from NASA’s New Horizons spacecraft reveal a bewildering variety of surface features that have scientists reeling because of their range and complexity. Image: This ...

Pluto was downgraded from a planet to a dwarf planet in 2006 by the International Astronomical Union. NASA Administrator Jared Isaacman has stated his support for President Trump to take action to ...

This video revisits the long fight over Pluto’s planet status and explains why the debate never really ended. After New Horizons reached Pluto in 2015, it revealed a world far more active and complex ...

Many people have formed strong opinions on this topic in an ongoing cultural conversation — you might even have one yourself. Pluto had been known as the ninth planet of our solar system ever since it ...