@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/4gchAc3SrY https://t.co/B58TnBGBT5

@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/4gchAc3SrY https://t.co/B58TnBGBT5