Based on images taken by the Mars Express spacecraft, experts from the European Space Agency (ESA) have found a river system that stretches out for nearly 435 miles. The river system lies just south of Mars’ equator and was shaped by both flowing water and rock impacts. ESA has named the ancient valley system ‘Nirgal Vallis’, and predicts that it is between 3.5 and 4 billion years old. ESA explained: “Nirgal Vallis is a typical example of a feature known as an amphitheatre-headed valley. Similar valleys are often seen on Earth, including those in the Atacama Desert and on the islands of Hawaii, and ESA believes that Nirgal Vallis was formed in a similar way.

Source: Daily Mirror October 14, 2019 10:18 UTC