Beijing, Dec 1 (ONA) --- The Chinese Mars probe codenamed Tianwen-1 and the European Space Agency’s Mars Express spacecraft have successfully performed a test of in-orbit relay communication. The communication lasted 10 minutes when China’s Mars rover Zhurong sent test data to Mars Express over a distance of approximately 4,000 Km. Data analysis results show that the relay communication equipment interfaces of Zhurong and Mars Express match and conform to international standards, and the contents of the transmitted data are complete and correct. The ...