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Hellas Planitia: Quiz


Question 1: The basin is thought to have been formed during the ________ period of the Solar System, an unknown number of years ago, when a large asteroid hit the surface.
MoonMoon rockLate Heavy BombardmentLunar geologic timescale

Question 2: Hellas Planitia, also known as the Hellas Impact Basin, is a huge, roughly circular impact basin located in the southern hemisphere of the planet ________.
Water on MarsDeimos (moon)MarsPhobos (moon)

Question 3: With a diameter of about 2,300 ________ (1,400 mi),[4] it is the largest unambiguous impact structure on the planet, though a distant second if the Borealis Basin proves to be an impact crater.


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