Last updated on May 16th, 2018
16. Named after: Pluto is named after the Greek god of the underworld.
17. How big? Pluto is smaller than the Earth’s moon and is half as wide as the United States.
18. Water or ice? Pluto has a lot of water in the form of ice. The amount of this water contained on the planet is almost thrice the amount reserved in all the Earth’s oceans.
19. Missions to Pluto: there has been only one mission to Pluto until now.
20. Inside Pluto: it is suspected by the scientists that Pluto has a rocky core which is surrounded by a mantle of water ice.
21. Big dents on the planet’s surface: craters as large as 260 km in diameter have been seen on Pluto.
22. Pressure: the pressure on the Earth’s surface is 100,000 times greater than that on Pluto’s.
23. Naming the planet: Pluto is the only planet named by an 11-year-old English girl — Venetia Burney. It was named so in 1930. The girl was awarded 5 pounds as a reward for suggesting the name.
24. Life? as per the data gathered from Pluto, scientists believe that existence of life is not possible on the planet.
25. Spectroscopy: this technique of analysis of light is used to uncover strange and unknown facts about Pluto.
26. Sunlight: due to the enormous distance between Pluto and the Sun, the sunlight takes almost 5 hours to reach Pluto. And it (sunlight) takes 8 minutes and 20 seconds to reach Earth.
28. NASA: NASA launched a spacecraft named New Horizons, which is about the size of a piano, to study Pluto. It is also the first spacecraft to flyby Pluto.
29. Elements on Pluto: scientists have estimated that water might be in existence between the rocky core of Pluto and its thick outer layer of ice. It is also believed that the planet’s water should also be containing biogenic elements like carbon, hydrogen, calcium, nitrogen, potassium, phosphorus, magnesium, sulfur, chlorine, sodium, and iron.
30. The absence of Oxygen: no traces of oxygen have been detected on Pluto yet.
31. The intensity of the Sun: during the daytime, the Sun would be 1/900 times dimmer on Pluto than full daylight on Earth.
32. The direction of rotation: Pluto, like Venus and Neptune, rotates backward, i.e from east to west. The planet also rotates on its side.
Pluto – Quick facts
|Discovered by||Clyde Tombaugh|
|Date of Discovery||February 18th, 1930|
|Surface Area||16,647,940 square km|
|Equatorial Inclination||122.5 degrees (retrograde rotation)|
|Mean Orbit Velocity||16,809 km/h|
|Surface Temperature||minus 233 to minus 223 °C|
|Equatorial Circumference||7,231.9 km|
|Volume||6,387,259,783 cubic km|
|Orbit Size Around Sun||5,906,440,628 km|
|Escape Velocity||4,428 km/h|
|Density||2.050 gram per cubic centimeter|
|Equatorial Radius||1,151 km|
|Surface Gravity||0.66 meter per second square|