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| 关键词：pneumonia outbreak Hong Kong |
| 概念： |
| AN ASTEROID dubbed “potentially hazardous” by space agency NASA will come incredibly close to Earth next week, NASA"s asteroid trackers have confirmed. |
| If a mid-air collision happens, this asteroid will unleash energy equivalent to the blast of 30 nuclear bombs. |
| The National Aeronautics And Space Administration (NASA) has revealed the details regarding an asteroid that is supposed to create a massive impact once it ... |
| "This one did sneak up on us," one NASA expert wrote in an internal email, two days after the football-field-sized asteroid narrowly missed the planet. |
| Elon Musk, CEO of SpaceX and Tesla, tweeted that a "big rock" is going to hit Earth, and that we "currently have no defense." |