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We Know Your Relationship Status Based On These Astronomy Questions

Do you have a moon in your life?

Posted on July 9, 2015, at 2:24 p.m. ET

  1. NASA/JPL/JHU-APL
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    Ceres is so big that it is also a dwarf planet!

  2. NASA
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    One day on Mercury takes 59 Earth days.

  3. NASA/JHU-APL/SRI
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    Though there is likely a whole bunch more, scientists have officially recognized five dwarf planets: Ceres, Pluto, Eris, Makemake and Haumea.

  4. michal_staniewski / Thinkstock
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    Sure Mercury is closer to the Sun, but Venus has a pretty serious greenhouse situation going on over there, leading to temperatures hot enough to melt lead.

  5. NASA
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    Mars is around 60% smaller than Earth by radius.

  6. Correct
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    27 days, yo.

  7. NASA
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    There's plenty of hydrogen in the atmosphere, but the denser planet part is mostly water, ammonia, and methane.

  8. NASA
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    The Oort Cloud is where most long-period comets are thought to come from. Its really really out there.

  9. Correct
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    Venus and Mercury do not have any moons.

  10. NASA / Southwest Research Institute / Alex Parker
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    For a planet to be a planet, it has to orbit the Sun, be large enough to be spherical, and massive enough to "clear its orbit." Pluto fails the third part of this test.

  11. XiXinXing / Thinkstock
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    Uranus and Venus spin in an entirely different direction compared to the other planets (and Sun) in the solar system.

  12. NASA/JPL-Caltech/Space Science Institute
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    There are lots of gaps and divisions, but scientists recognize seven major rings.

  13. University of Copenhagen/Lars Buchhave / Via jpl.nasa.gov
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    This is not our solar system's first rodeo.

  14. NASA
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    It's on Mars. It's called Olympus Mons.

  15. NASA
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    Titan is a pretty rad place, too.

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