A human-operated spaceship reaches the moon in 3 days. The moon is about 386,400 km from Earth. Mars, our closest planetary neighbor, is, at its closest, about 140 times farther away from us than the moon if Mars stays in place. Assuming a very simple model of the solar system, about how long would it take that same spaceship to reach Mars?(1 point)
Responses
about 1 year
about 1 year
about 7.5 years
about 7.5 years
about 22.5 years
about 22.5 years
about 2.5 years
1 answer
about 2.5 years
17 answers