在切换之后是在纪念沉默，这是谁也承担了宇航员的太空探索的名字死亡的时刻。
The handoff was followed by a moment of silence at the memorial, which bears the names of astronauts who have died in the exploration of space.
天文学家借助哈勃太空望远镜的光学过滤器，可以准确查明该星云的化学组成、温度和密度，并追踪恒星的死亡过程。
Optical filters in the space telescope allowed astronomers to precisely determine the nebula's chemical makeup, temperature, and density, and to trace the stages of the star's demise.
如果你不穿太空服登录火星表面，血液里氧气将变成气泡，然后突然死亡。
If you went onto the surface of Mars without a space suit, the oxygen in your blood would literally turn into bubbles, therefore causing immediate death.
如果你不穿太空服登录火星表面，血液里氧气将变成气泡，然后突然死亡。
If you went onto the surface of Mars without a space suit, the oxygen in your blood would literally turn into bubbles, therefore causing immediate death.
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