NASA chief: Pluto should be a planet again
If you're still mourning the little ball of ice formerly known as the ninth planet from the sun, you're not alone. NASA admin Jim Bridenstine misses Pluto, too.
pluto
Pluto no longer planet, could be again
Pluto was long considered our solar system's ninth planet. Although small, it orbits the sun and has the spherical shape required to be considered a planet.
What keeps Pluto's ocean from freezing?
When NASA's New Horizons spacecraft flew past Pluto in 2015, researchers hoped that its data would help them unravel some of the dwarf planet's mysteries. Instead, the discoveries made during the close-up look at Pluto and its moon Charon revealed more questions that needed answering.
Winter may destroy Pluto's atmosphere by 2030, study says
Pluto's atmosphere may completely collapse and freeze by 2030, according to a 28-year study of the small, cold dwarf planet on the edge of our solar system.
Ancient scars on Pluto and Charon reveal distant space objects
When the New Horizons mission conducted the closest flyby of Pluto and its moon, Charon, in 2015, images provided a zoomed-in view of their pockmarked surfaces. The scars are ancient impact craters that were created 4 billion years ago.
NASA provides first image from record-setting flyby of Ultima Thule
The new year on Earth began with a record-setting space mission 4 billion miles away -- a first look at an object on the edge of our solar system.
NASA plans New Year's flyby of object 4 billion miles away
As people were ringing in the new year on Earth, NASA's New Horizons spacecraft conducted a flyby of Ultima Thule, a Kuiper Belt object more than 4 billion miles away.
Pluto should not have been downgraded, say some scientists
Make Pluto great again?
Pluto has 'Earth-like characteristics,' study says
Nearly three years after NASA's New Horizons spacecraft flew past Pluto, we're still learning about the dwarf planet.
