Book 19, Question 148
Are There Rivers on Other Worlds?
Yes, there are rivers on other worlds, and some used to flow with water! Long ago, Mars had rivers, and scientists are exploring the clues. And on a moon of Saturn, rivers flow right now.
More fun facts
- Titan, Saturn's largest moon, has rivers and lakes.
- Its rivers are made of liquid methane, not water.
- Methane rivers may have different shapes than Earth's rivers.
- Mars had rivers long ago.
- Scientists think other worlds had lakes and streams at times in the past.
Questions kids ask
What are Titan's rivers made of?
Liquid methane, not water.