“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto turns out to have as much complexity as Mars or Earth, so much so that I ...

He had discovered "Planet X." Eleven-year-old Venetia Burney Phair later suggested the name Pluto, inspired by the ... Makemake, and Eris). Astronomer Mike Brown, discoverer of most of those ...

He searched for Planet X from 1905 until his ... Allow little Pluto to keep its planetary status and you would have to confer the same honor on Eris, a Kuiper Belt object of about the same size ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary ...

He called this hypothetical world "Planet X." "In some ways, Pluto's more of a planet than some of the other established planets, like Mercury." ...

Pluto, discovered in 1930 ... which came to be called Planet X. Using a tool called a blink comparator, Tombaugh finally found the mysterious body in 1930. The machine involved taking pairs ...

Explore the planets with NASA There are five officially recognized dwarf planets in our solar system: Ceres, Pluto, Haumea, Makemake, and Eris, according to NASA. What happened to Pluto?

Astronomers have peered through the atmosphere of a planet beyond the Solar System, mapping its 3D structure for the first time. By combining all four telescope units of the European Southern ...