Science & Nature

The Search for Water on Mars

A talk about how scientists look for signs of water and life on Mars.

B29 min

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1For many years, scientists have wondered whether liquid water ever existed on Mars.

2Photographs from space show deep valleys that look like old, dried river beds.

3These shapes suggest that rivers once flowed across the surface of the planet.

4Today the surface is far too cold and dry for liquid water.

5However, robots have found large amounts of ice hidden under the red dust.

6If this ice melted, it could provide water for future human visitors.

7Finding water is exciting because water usually means that life might be possible.

8So far, no one has discovered living things on the red planet.

9New spacecraft will bring rock samples back to Earth within the next decade.

10Scientists around the world will study these samples carefully for any signs of ancient microscopic life.

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