April 24 is Space Day in China. On that day, China announced (宣布) the name of its first Mars exploration mission (火星探测任务) — Tianwen-1 (天问一号). Do you like this name? China is going to launch (发射) the Mars probe (探测器) this year. It will complete orbiting (环绕轨道运行), landing (降落) and roving (巡视) in one mission. What does Mars look like? Are there aliens on Mars? We will find the answers soon!