What If We Landed on Mars — But It Wasn't Empty?

Imagine you're playing hide and seek, and you go to a place you think is empty, but then you see someone hiding behind the trees. That’s like landing on Mars and finding life there! It means we’re not alone in space, and maybe other beings are watching us too.

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Examples

  1. You land on Mars and see footprints that aren’t yours.
  2. Your rover finds little green balls under a rock.
  3. A message lights up across the Martian sky.

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