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because there was frozen water

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Q: Why do scientists believe Mars was once a wetter planet?
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Related questions

Why was Mars once a wetter planet?

Because of the gases that cover's mars


What planet do astronomers believe that there is a good chance of liquid water?

Mars scientists found water on. Mars


Every thing about Mars?

Mars is a planet in our solar system. There is no life on Mars. It's half the size of earth It's the only planet that scientists believe supported life in the past


What planet do scientists believe life may once have existed on?

mars. now tell me why they think that?


What is the planet that is the most similar to earth?

Mars


Where did the water go on Mars?

Scientists believe as time passed, the atmosphere on Mars thinned and the pressure decreased. This caused all the water on the planet to evaporate.


Was there life on mars years ago?

Many scientists believe there was because robots on the planet have found traces of water.


Are all rocks on Mars covered with a rusty dust?

Some scientists believe that Mars is red due to rocks being rusted by water that once flooded the planet.


Does planet Mars exist?

of cause it does scientists have proven it


What have scientists learned about the new planet?

Which one? mars


Do Mars have house on there planet?

there are no houses on mars buut can we build houses on mars that is what scientists are trying to figure out


Who is the first scientist reached the planet mars?

No scientists from Earth have ever been to Mars.