Extraterrestrial Objects Visited by Spacecraft - Statistics

General Stats

Answer Stats

Object type	First Spacecraft	Answer	% Correct
Planet	Pioneer 10	Jupiter	100%
Planet	Pioneer 11	Saturn	100%
Planet	Mariner 4	Mars	98%
Moon	Luna 2	Moon	98%
Dwarf Planet	New Horizons	Pluto	98%
Planet	Mariner 2	Venus	98%
Planet	Voyager 2	Neptune	94%
Planet	Voyager 2	Uranus	94%
Planet	Mariner 10	Mercury	90%
Dwarf Planet	Dawn	Ceres	76%
Moon	Cassini (Huygens lander)	Titan	67%
Comet	Vega 1	1P/Halley	55%
Asteroid	Dawn	4 Vesta	29%
Asteroid	Galileo	243 Ida	12%
Asteroid	NEAR Shoemaker	433 Eros	12%
Asteroid	Hayabusa	25143 Itokawa	6%
Asteroid	Rosetta	21 Lutetia	4%
Comet	ICE	21P/Giacobini-Zinner	4%
Asteroid	Chang'e 2	4179 Toutatis	4%
Asteroid	Deep Space 1	9969 Braille	4%
Comet	Deep Impact	9P/Tempel 1	4%
Comet	EPOXI	103P/Hartley	2%
Comet	Deep Space 1	19P/Borrelly	2%
Asteroid	NEAR Shoemaker	253 Mathilde	2%
Comet	Giotto	26P/Grigg-Skjellerup	2%
Asteroid	Rosetta	2867 Steins	2%
Asteroid	Stardust	5535 Annefrank	2%
Comet	Rosetta	67P/Churyumov-Gerasimenko	2%
Comet	Stardust	81P/Wild	2%
Asteroid	Galileo	951 Gaspra	2%
Comet	Ulysses	McNaught (C/2006 P1)	2%

Score Distribution

Percent of People with Each Score

Percentile by Number Answered

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