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True/False: Five thousand years ago, astronomers in Sumeria (located in present-day Iraq) identified Mercury and followed its wandering path across the sky.
True Try
False
Due to its closeness to the Sun, when is Mercury viewable from Earth?
(Check both answers that apply)
(before sunrise and after sunset)
Just before sunrise Try
Right after sunset Try2
Just after sunrise Try
How long does it take Mercury to complete one revolution around the Sun?
59 days
88 days Try
243 days
365 days
was a small spacecraft. Its body was only 1.4 meters (4.6 feet) by 0.46 meters (1.5 feet)-less than the width of most classroom desks.
Mariner 10
Mariner 10 did not fly directly to . After leaving Earth's atmosphere, it flew by and used the planet's gravitational force to slingshot itself around Venus, bending its flight path towards Mercury. After almost months in flight, Mariner 10 made its first flyby of Mercury.
Mercury
Venus
5
The probe, ____________________ was launched in 2004 with the purpose of photographing magnetic fields, thin atmosphere, and surface features.
Mariner 10
Messenger Try
Opportunity
True/False: On its third flyby in October of 2008, Messenger photographed 40% of the surface of Mercury.
True
False Try
As of December , the Messenger spacecraft will have flown more than 1,000 Earth in orbit around Mercury.
2013
days
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