Is there life on Mars? It is a question that has existed for decades. NASA and China are sending spacecraft that would finally get an answer to the eternal question. In this Wall Street Journal video, learn about NASA and China’s technology to find life on Mars. China’s Tiangong 1 has already entered the Mars orbit but will not land on the red planet. It is the U.S. mission’s Perseverance rover that recently landed on Martian soil. What technology is it going to use? Let’s listen to NASA’s astrobiologist Kenneth Williford and other specialists in this video.