Early Mars Climate was Complex, with Streams Flowing Intermittently for Millions of Years universetoday.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from universetoday.com Daily Mail and Mail on Sunday newspapers.
A new study of ancient Martian valleys shows that at least a quarter of them were created by massive floods from overflowing lakes billions of years ago.
Ever since it arrived in orbit around Mars back in 2006, the Mars Reconnaissance Orbiter (MRO) has been sending back incredible images of the planet, showing bits and pieces of it in great detail thanks to a wonderful instrument called the High Resolution Imaging Experiment.