some planets are so far away that is impossible for humans or animals to travel them.What is the solution for this problem?
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Explanation: Then we have to travel with the speed of light. Similarly the light from sun takes 8 minutes to reach the Earth.
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By closely studying the colours of light from a star, astronomers can understand the star's temperature, its movements, ... Some planets are so far away that it is impossible for animals (or humans) to travel to them. What is the solution to this problem? the Hubble Space Telescope (HST) 10 2 3 4 5 6 7 8 Mars
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