What is the Kuiper Belt?
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Wrong!
Pluto is among its largest known members.
Which spacecraft became the first to enter interstellar space, in 2012?
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It launched in 1977 and still transmits data.
Which moon of Saturn vents water ice from a subsurface ocean?
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Wrong!
Cassini flew directly through its plumes.
What is the Roche limit?
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Wrong!
It helps explain why planetary rings form.
What is Mercury’s spin-orbit resonance?
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It rotates three times for every two orbits of the Sun.
Which dwarf planet is the largest object in the asteroid belt?
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It holds roughly a quarter of the belt’s total mass.
What is the name of Pluto’s largest moon?
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It is so large the pair orbit a point outside Pluto itself.
Which mission placed the Philae lander on a comet in 2014?
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The target was comet 67P/Churyumov-Gerasimenko.
What drives Venus’s extreme surface temperature?
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Its atmosphere is over 96 per cent carbon dioxide.
Roughly how far out does the hypothesised Oort Cloud extend?
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It is thought to be the source of long-period comets.
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