(a) Drag-and-drop from the right to the left, or (b) click on a right
side answer box and then on a left side box to move it.
Questions
Choices
1. Mars
Nix
2. Jupiter
Proteus
3. Saturn
Deimos
4. Uranus
Thebe
5. Neptune
Namaka
6. Pluto
Enceladus
7. Makemake
Dysnomia
8. Haumea
Vanth
9. Eris
Miranda
10. Orcus
S/2015 (136472) 1
Select each answer
Quiz Answer Key and Fun Facts
1. Mars
Answer: Deimos
Asaph Hall discovered Deimos and Phobos, the two moons of Mars, in 1877. Deimos has an irregular shape with a mean radius of slightly under 4 miles. Its orbit, at about 14,580 miles, around Mars takes about 30 hours. Scientists suspect that both moons may have originated as captured asteroids.
2. Jupiter
Answer: Thebe
Stephen Synnott discovered Thebe in 1979. It is considered one of Jupiter's inner satellites and orbits Jupiter at a distance of about 138,000 miles. Thebe has a radius of about 31 miles. The same side of Thebe always faces towards Jupiter in its orbit of slightly over 16 hours.
3. Saturn
Answer: Enceladus
Enceladus has a radius of about 310 miles. William Herschel discovered the moon in 1789 although relatively little was known about it until the later 20th century. There is a layer of ice on Enceladus which gives it lower than expected surface temperatures. Enceladus orbits Saturn in about 33 hours at a distance of about 147,000 miles.
4. Uranus
Answer: Miranda
Miranda orbits Uranus at a distance of about 80,100 miles in about 34 hours. The moon was discovered by Gerard Kuiper in 1948. Like several other of the moons of Uranus, Miranda is named after a character from a Shakespearean play. It has a radius of about 146 miles.
5. Neptune
Answer: Proteus
Proteus was not discovered until 1989, when it was observed by the Voyager 2 space probe. The moon has a radius of about 125 miles and a crater (Pharos) which has a radius of over 60 miles. In its orbit, at about 73,000 miles, Proteus always shows the same face to Neptune. Proteus orbits Neptune in about 27 hours.
6. Pluto
Answer: Nix
Nix and Hydra, two of Pluto's moons, were both discovered in 2005 through use of the Hubble Space Telescope. Nix has a radius of about 15 miles. Nix is named for the Roman goddess of darkness and night. Nix orbits Pluto at a distance of about 30,000 miles over a period of about 25 days.
7. Makemake
Answer: S/2015 (136472) 1
S/2015 (136472) 1 is a moon of the dwarf planet Makemake. It was discovered in 2015 through use of the Hubble Space Telescope. The moon has a radius of about 55 miles. S/2015 (136472) 1 has an orbital distance of at least 13,000 miles from Makemake and its orbit is at least 12 days.
8. Haumea
Answer: Namaka
Namaka is a moon of the dwarf planet Haumea. In Hawaiian mythology, Namaka is the goddess of the sea. It was discovered in 2005 by a team including Michael E. Brown, Chad Trujillo, and David Rabinowitz. Namaka has a radius of about 53 miles. It is estimated to orbit Haumea at a distance of about 16,000 miles with an orbital period of about 18 days.
9. Eris
Answer: Dysnomia
Dysnomia is a moon of the dwarf planet Eris. It was discovered by Michael Brown in 2005. Dysnomia is estimated to have a radius of about 220 miles. It orbits Eris at a distance of about 23,000 miles over a period of about 16 days. The moon is named for the "daemon" of lawlessness and daughter of Eris.
10. Orcus
Answer: Vanth
Vanth was discovered in 2005 by Michael Brown. It is a moon of the dwarf planet Orcus. In mythology, Vanth is a winged spirit who brings the deceased to the underworld. It has a radius of about 150 miles. Vanth orbits Orcus at a distance of about 5600 miles over a period of about 9.5 days.
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