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

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18 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
B
D
E
A few hundred thousand years
A few hundreds of millions of years
We could never colonize the galaxy unless we had ships that could travel very close to the speed of light.
A few million years
A few billion years
Transcribed Image Text:18 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 B D E A few hundred thousand years A few hundreds of millions of years We could never colonize the galaxy unless we had ships that could travel very close to the speed of light. A few million years A few billion years
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