Study Questions Martian Streaks Linked to Water Flows

Scientists studied streaks on Mars that look like water flows.

They found these streaks might be made of tiny dust, not water.

This dust flows down slopes when disturbed, like dry sand.

The study used many images to make this discovery.

This suggests Mars may not have water flowing on its surface, making it a less likely place for life to exist, at least on the surface.

It makes scientists look for life in other places on Mars.