According to NASA's near-Earth orbit project, the Earth is hit by a rugby-sized rock mass every five thousand years, with an asteroid impact of an average of millions of years of destruction. Last year, several scientists called on humans to pay attention to the threat of asteroids. In November, more than 100 famous scientists signed an initiative to take active measures to prevent asteroid threats. Experts suggest that the investment in detecting and monitoring near-Earth objects should be increased by a factor of one hundred. In March of this year, a Danish NGO announced plans to develop an Earth-saving aircraft called the ultra-high-speed asteroid impact spacecraft HAIV, which will have the ability to destroy asteroids before they hit Earth. It is estimated that there are approximately 25,000 NEOs larger than 140 meters in size, which are approaching but do not necessarily collide with the Earth. The infographic can be used to observe the cost-effectiveness, value, accessibility and size of different asteroids. Webster and his colleagues used Planet Resources' Asterank database, which contains a total of 600,000 asteroids. Stainless Steel Barbecue Grate Barbecue wire Grill Grate is made of high quality 304 stainless steel, never rusting and durable. BBQ Wire mesh does not have any coating or chemical ingredients, making food safer. BBQ Grate Mesh,stainless steel wire BBQ grate,BBQ Grill Metal Mesh,stainless steel BBQ grill grate Shenzhen Lanejoy Technology Co.,LTD , https://www.copper-nut.com
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