Pluto - Wikipedia
Pluto was discovered in 1930 by Clyde W. Tombaugh, making it by far the first known object in the Kuiper belt. It was immediately hailed as the ninth planet, but it never fit well with the other eight, [15]: 27 and its planetary status was questioned when it …
Pluto discovered | February 18, 1930 - HISTORY
2010年3月3日 · On February 18, 1930, Tombaugh discovered the tiny, distant planet by use of a new astronomic technique of photographic plates combined with a blink microscope.
Pluto - NASA Science
Pluto was discovered in 1930 by astronomer Clyde Tombaugh. It was named by 11-year-old Venetia Burney of Oxford, England. Get the Facts. Pluto nearly fills the frame in this image from NASA’s New Horizons spacecraft taken on July 13, 2015, when the spacecraft was 476,000 miles (768,000 kilometers) from the surface.
Pluto Facts - Science@NASA
Discovered in 1930, Pluto was long considered our solar system's ninth planet. But after the discovery of similar worlds deeper in the Kuiper Belt, Pluto was reclassified as a dwarf planet in 2006 by the International Astronomical Union.
History of Pluto - Lowell Observatory
Pluto’s vast 1,000-kilometer-wide heart-shaped nitrogen glacier (informally called Sputnik Planum) that New Horizons discovered is the largest known glacier in the solar system. Pluto shows evidence of vast changes in atmospheric pressure and, possibly, past presence of running or standing liquid volatiles on its surface – something only ...
Pluto: How it Was Discovered, Named and Demoted | TIME
2015年2月18日 · W hen it was first discovered, Pluto was the coolest planet in the solar system. Before it was even named, TIME surmised that “the New Planet,” 50 times farther from the sun than Earth, “gets...
February 18, 1930: Clyde Tombaugh discovers Pluto - EarthSky
2022年2月18日 · On this date in 1930, Clyde Tombaugh, searching for a 9th planet, discovered Pluto. This opened the door to further exploration of the outer solar system.
Pluto | Size, Moons, Temperature, & Facts | Britannica
2024年11月10日 · Pluto, large, distant member of the solar system that formerly was regarded as the outermost and smallest planet. It also was considered the most recently discovered planet, having been found in 1930.
Pluto: The Discovery of a Planet | The Planetary Society
2005年2月18日 · Read here how Clyde Tombaugh, a farm boy from Kansas with a high school education, succeeded where accomplished professional astronomers had failed, and discovered the elusive 9th planet. Learn about how the closed cosmos of the ancients became the open universe of modern times, opening the door to new discoveries in the heavens.
Clyde Tombaugh - Wikipedia
He discovered Pluto in 1930, the first object to be discovered in what would later be identified as the Kuiper belt. At the time of discovery, Pluto was considered the ninth planet, but was reclassified as a dwarf planet in 2006. Tombaugh also discovered many asteroids, and called for the serious scientific research of unidentified flying objects.