Mars Day offered Allison and Alysia's children a chance to learn more about a world that humans may set foot on within their lifetimes.
火星日为阿利森和阿莉西亚的孩子提供了一个机会让他们知道在他们有生之年可以涉足的另一个世界。
China named its first Mars exploration mission Tianwen 1 on April 24, 2020, China's fifth Space Day.
2020年4月24日是中国第五个“航天日”,中国将其首次火星探测任务命名为“天问一号”。
Mars Day at the Smithsonian Air and Space Museum in Washington is a celebration of our solar system's most famous planet.
VOA: special.2010.07.28
The Smithsonian's Mars Day offered a chance for people of all ages to touch Mars, or at least a piece of it.
VOA: special.2010.07.28
Visitors to Mars Day crowded around a piece of the meteorite in the huge Milestones of Flight Gallery.
VOA: special.2010.07.28
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