来自MSN18 小时
Chinese rocket debris explodes near homes, sparks concern
A fragment of the Chinese Long March 3B rocket fell to Earth, creating a dangerous situation. The piece exploded near ...
Hackaday5 年
NASA’s “Green” Fuel Seeks Safer Spaceflight By Finally Moving Off Toxic Hydrazine
When SpaceX’s Crew Dragon exploded in April during ground tests, the release of approximately one and a half tons of hydrazine and nitrogen tetroxide propellants required an environmental ...
Hackaday5 年
rocket fuel
When SpaceX’s Crew Dragon exploded in April during ground tests, the release of approximately one and a half tons of hydrazine and nitrogen tetroxide propellants required an environmental ...