A human-operated 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)

about 2.5 years

about 1 year

about 22.5 years

about 7.5 years

1 answer

To find out how long it would take for the spaceship to reach Mars, we need to multiply the time it takes to reach the moon by the factor that represents the difference in distance between Mars and the moon.

The distance between Mars and the moon is 140 times greater than the distance between Earth and the moon. Therefore, we can say that the spaceship would take approximately 140 times longer to reach Mars than it takes to reach the moon.

If it takes 3 days to reach the moon, then approximately, it would take:

3 days x 140 = 420 days

So, it would take about 420 days or approximately 1 year for the spaceship to reach Mars.

Therefore, the correct answer is:

about 1 year