Pluto Quiz: Think You Know Pluto?

Pluto has been in the news quite a bit these past several months. Let’s see if you’ve been paying attention. Feel free to share your score in the comments section. When finished head over to our Pluto Flyby forum thread for the latest news.

1. Pluto is named after the Roman and Greek god of

 Sleep

 The Underworld

 Luck and Fortune

 Winds

2. Pluto is ____ billion miles away from Earth

 2.67

 2.19

 2.88

 2.93

3. Pluto’s atmosphere is composed primarily of

 Hydrogen

 Helium and Nitrogen

 Nitrogen and Methane

 Hydrogen and Helium

4. When was Pluto discovered?

 1937

 1928

 1941

 1930

5. Who discovered Pluto

 William Herschel

 Clyde Tombaugh

 Simon Marius

 Arno Allan Penzias

6. How many known satellites does Pluto have?

 3

 2

 5

 0

7. How many Earth years is Pluto’s orbital period?

 248

 212

 254

 229

8. What is the name of the Pluto space probe?

 Kepler

 Juno

 Cassini

 New Horizons

9. The radio transmission time from Pluto to Earth is

 5 hours and 02 minutes

 3 hours and 32 minutes

 4 hours and 25 minutes

 2 hours and 43 minutes

10. Which is not a moon of Pluto

 Charon

 Hydra

 Nix

 Oberon

11. When was Pluto reclassified as a dwarf planet?

 1999

 2006

 2002

 2008

12. The recent Pluto probe carries a CD of

 Wikipedia pages

 Supporter names

 XKCD comics

 Einstein quotes

13. The Radioisotope Thermal Generator that powers the Pluto probe is a spare from

 Genesis

 Jason 1

 Ulysses

 Galileo-Cassini

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