An article published in the journal “Geology” describes the study of the remains of a system of ancient riverbeds in the region of the planet Mars called Arabia Terra. A team of scientists led by Joel Davis of the University College London analyzed high-resolution photographs taken by the Mars Reconnaissance Orbiter (MRO) space probe to find traces of rivers that flowed nearly 4 billion years ago. This is another confirmation of the fact that at that time the climate on Mars was warm and wet, similar to the Earth.