結果 : how long is a space trip to mars
9:27

How Long Would It Take Us To Go To Mars?

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21:41

How Humanity Will Actually Colonize Mars (Year by Year)

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2:12

How long does it take to get to Mars? - BBC News

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47:21

How Are We Going To Survive On Mars? | Spark

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1:01

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Why Is it So Difficult To Get To Mars?

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0:25

MAVEN's Trajectory to Mars

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1:00

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3:20

How Long Does it Take to Get to Mars?

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2:04

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9:35

The first human mission to Mars: What we know so far

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6:48

How Will We Get To Mars? | Let's Explore Mars! | SciShow Kids

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8:55

How Dangerous is Deep Space Travel to Mars and Beyond ?

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9:22

Elon Musk Reveals Plan To Colonize Mars

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1:00

How HUGE is Mars' Mountain REALLY?

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7:41

7 ways a trip to Mars could kill you

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8:22

Why You Wouldn't Survive A Mission To Mars

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