The dwarf planet was reclassified once before in 2006.
The campaign also wants the moon to be categorized as a type of planet.
So it was Mother's Day 2013, and I got out of bed and was coming downstairs around 1:30 pm (because that's how we party), to
"More than one face shone with tears. It was a historic moment after all. The fastest space craft ever to leave Earth had
The ocean is likely a slushy one, hiding beneath Pluto's heart-shaped central plain.
From its giant icy heart to its mountain ranges, there’s a lot to (virtually) explore on the dwarf planet.
Over time, the heart might actually have a "beat."
When I was a kid, Pluto was a planet. Of course, when I was a kid our map of the solar system was very immature. Astronomers knew of nine round planets that went around the Sun, and Pluto was one of them. But Pluto was always the oddball.