NASA's Perseverance Rover Finds Evidence of Multiple Life-Friendly Water Phases on Mars

Imagine Mars used to have lakes, like Earth!

NASA's robot explorer, Perseverance, found clues that water in a place called Jezero Crater changed many times.

First, the water was very hot and acidic, which isn't good for life.

Then, it cooled down and became less acidic, which was a little better.

Finally, the water became cool and alkaline, similar to places on Earth where tiny living things can survive.

This means Mars might have had places where life could have started at different times in its ancient past.

The rover used special tools to look at the rocks and find out what the water was like a long, long time ago.