January 28, 2016

Martian peaks with streaks running down slopes

Did you see the recent announcement from NASA (America’s space agency) about finding evidence of water on Mars? Scientists have long thought that there may have been water on this desert planet in the past, but these latest images taken by the Mars Reconnaissance Orbiter are extraordinary because they show evidence of water flowing today.

Do you see the dark streaks in this image? These streaks are from the minerals left behind when briny (salty) water flows down the slopes in the Martian "summer."

Why is this important for us? If there is liquid water on Mars, then it makes it much more possible that we can travel there to explore Mars ourselves. The rocket needed to carry astronauts on the year-long trip to Mars will be much lighter if it doesn’t have to carry water. There is currently no Mars mission planned…but I bet there will be soon.


Image Credit: NASA/JPL-Caltech/Univ. of Arizona    


Posted by: Seymour Simon

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