Author Question: If we develop spacecraft that can take humans to nearby solar systems at a few percent of the speed ... (Read 75 times)

Haya94 · **on:** Jul 27, 2018

If we develop spacecraft that can take humans to nearby solar systems at a few percent of the speed of light, how long would it be before we could conceivably populate all habitable planets in the entire Milky Way?

A) a few hundred thousand years
B) a few million years
C) a few hundreds of millions of years
D) a few billion years
E) We could never colonize the galaxy unless we had ships that could travel very close to the speed of light.

Question 2

Process of Science: Give a scientific explanation of the success of the central African rainfall-prediction technique of observing the waxing crescent Moon. Can the Moon cause a change in rainfall? Or vice versa?

What will be an ideal response?

chinwesucks · **Reply #1 on:** Jul 27, 2018

Answer to Question 1

B

Answer to Question 2

The Moon's orientation varies seasonally, and so does the weather, so the orientation and the weather are correlated, but one does not cause the other.