Osuga Valles is a complex set of river channels on Mars ESA/DLR/FU Berlin
Mars today is a freezing desert, but it wasn鈥檛 always so. A new analysis shows that rivers flowing on the planet鈥檚 surface 1 billion years ago were wider than those found on Earth today.
Evidence collected by rovers and orbiting spacecraft has shown that Mars鈥檚 surface was once covered with lakes and rivers, but we don鈥檛 know exactly when they dried up. It is thought that about 4 billion years ago, the planet聽started to lose its atmosphere and thus its water.
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