China’s Tianwen-2 mission launches to explore asteroid that may be a lunar fragment

China’s Tianwen-2 mission has launched to explore an asteroid that may be a piece of the moon, as well as an active asteroid that acts like a comet.

​ China’s Tianwen-2 mission has launched to explore an asteroid that may be a piece of the moon, as well as an active asteroid that acts like a comet. Read More Breaking News, Latest News and Videos | CNN