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Robert Goddard contributed to astronomy by A-walking on the moon B-designing liquid propulsion system C-developing theories of gravity and motion D-using math to predict the existence of Neptune
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Robert Goddard contributed to astronomy by

A-walking on the moon

B-designing liquid propulsion system

C-developing theories of gravity and motion

D-using math to predict the existence of Neptune

User Mavrosxristoforos
by
7.5k points

1 Answer

3 votes

Your answer is going to be letter B

User Paymahn Moghadasian
by
8.2k points
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