An international team of researchers, co-led by ETH Zurich and Imperial College London, has derived the first estimate of global meteorite impacts on Mars using seismic data. Their findings indicate that between 280 to 360 meteorites strike the planet each year, forming impact craters greater than 8 meters (about 26 feet) across. An international team of researchers, co-led by ETH Zurich and Imperial College London, has derived the first estimate of global meteorite impacts on Mars using seismic data. Their findings indicate that between 280 to 360 meteorites strike the planet each year, forming impact craters greater than 8 meters (about 26 feet) across. Planetary Sciences Phys.org – latest science and technology news stories