400m km within 163 days, China's Mars probe heads for red planet

China's first Mars exploration mission Tianwen-1 travelled more than 400 million km by Sunday morning and is expected to enter Mars orbit next month, the country's space agency said. So far, the Mars probe had flown in space for 163 days. It was about 130 million km from Earth and about 8.3 million km from Mars, according to the China National Space Administration (CNSA).