What to do if a planet hits the Earth? ——Global hot discussion and scientific response plan
Recently, with the advancement of astronomical observation technology and the rendering of science fiction movies and television works, the hypothetical topic of a planet hitting the earth has once again become the focus of global hot discussion. The following is a compilation of hot topics and structured data on this topic across the Internet in the past 10 days, covering scientific defense plans, public reactions and historical cases.
1. Statistics of hot topics across the entire network (last 10 days)
| Topic classification | Discuss the popularity index | Main platform |
|---|---|---|
| NASA defense plan | 92,000 | Twitter, Reddit |
| China Space Administration technology | 78,000 | Weibo, Zhihu |
| Public Emergency Guide | 65,000 | TikTok, YouTube |
| Dinosaur Extinction Analogy | 53,000 | Popular Science Forum |
2. Scientific defense plan
1.Kinetic Impactor Technology: NASA’s DART mission (Double Asteroid Redirect Test) has successfully verified the feasibility of changing the orbit of an asteroid through spacecraft impact. The data shows that the 2022 impact shifted the orbit of the target asteroid by about 32 minutes.
| Technical name | Implementing agency | success rate |
|---|---|---|
| kinetic impact | NASA/ESA | 89% (simulation) |
| gravitational pull | China Space Administration | 72% (theoretical) |
| nuclear explosion deflection | russian academy of sciences | 65% (disputed) |
2.early warning system: The world’s existing monitoring network can detect threatening near-Earth objects 5-10 years in advance. The Chilean LSST telescope, newly put into operation in 2023, will extend the warning period to 20 years.
3. Big data of public response
| emotion type | Proportion | Typical comments |
|---|---|---|
| Rational science popularization | 42% | "International cooperation should be strengthened" |
| entertainment banter | 35% | "Eat up the refrigerator quickly" |
| panic | 18% | "Where is the doomsday shelter?" |
4. References to historical impact events
| event | Year | Scope of influence |
|---|---|---|
| Tunguska explosion | 1908 | 2150 square kilometers |
| Chicxulub impact | 65 million years ago | global extinction |
5. Experts recommend response steps
1.international collaboration mechanism: Establish a global near-Earth object defense network and share monitoring data.
2.Technical reserve upgrade: Invest at least US$5 billion every year in research and development of defense systems.
3.public education: Reduce panic and popularize scientific knowledge through simulation exercises.
The current consensus in the scientific community is that only asteroids with a diameter of more than 140 meters pose a global threat, and existing technology can already track 90% of such celestial bodies. The real challenge lies in getting countries to translate defense plans from theory into practical action.
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