Why did nasa make water filter?
They gave them to astronauts to use them in space. They are big machines that they use in space its huge.They do not have water up in space. It very need for astronauts to use them. If they did not have this they would die.
How we use it today
This version is a type of straw that uses the same charcoal method as the space filter.You can use them to filter stagnant water. There are some of these filter that you can buy that are very powerful. It is so powerful that it can turn soda into water. It is helthier for people that don't have much clean water to use this device to filter the very little dirty water that they have. That how we use it.