![](http://www.ecns.cn/hd/2021/09/17/ace6261efd6a45e2aadee20397e7bb9d.jpg)
Photo released on September 15, 2021 shows several craters that are filled with layered rock in Arabia Terra on Mars. Scientists found evidence that a region of northern Mars called Arabia Terra experienced thousands of "super eruptions," the biggest volcanic eruptions known, over a 500-million-year period, according to NASA. (Photo: VCG)