A 10-year-old’s passion for Pluto has caught the attention of NASA thanks to a compelling, viral letter on social media.

NASA chief Jared Issacman appears to be among those who support Pluto being reclassified as a planet. Could President Trump sign an executive order?

Pluto’s meteoric rise to rap popularity began last year, and during that time, she not only landed a hit with the rousing party track “Whim Whammie,” but had a summer smash in the process. The ...

Pluto may have been downgraded from full-planet status, but that doesn't mean it doesn't hold a special place in scientist's hearts. There are practical and sentimental reasons for that—Pluto has ...