@CNN: Photos gathered during NASA’s missions orbiting Mars have revealed that the planet was once home to raging rivers — and that those rivers existed more recently than previously thought, according to a new study https://t.co/AUhIAMsKU9 https://t.co/ut9yvvNof7

@CNN: Photos gathered during NASA’s missions orbiting Mars have revealed that the planet was once home to raging rivers — and that those rivers existed more recently than previously thought, according to a new study https://t.co/AUhIAMsKU9 https://t.co/ut9yvvNof7