The GOES-16 weather satellite is designed to detect lightning strikes. This weekend saw an asteroid.
Kl. At 16:00 on Saturday afternoon, meteorologists discovered an unusual light flash signature across the Caribbean waters 270 kilometers south of Puerto Rico. Its light was visible in an area as large as Rhode Island – too big to be lightning. Plus there were no clouds in the area. It had to be something else. The answer turned out to be something out of this world.
A spattering of dirt appeared on the National Weather Service in San Juan's radar. It is a sign of a meteor or asteroid effect.
How big was that? About 4 to 5 meters in diameter or the size of the car.
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Then the asteroid entering the atmosphere, Spaceweather.com reports that the extensive core experimental banning infrasound station in Bermuda discovered "air waves" associated with the blast. Its recording station is located more than 1
People can detect sounds between 20 and 20,000 Hertz. It is a measure of how many times per second air pockets vibrate back and forth, jiggling sensory receptors in our ear that treat sound. Dogs can hear frequencies twice as high – close to 40,000 Hertz – that's why they want to crawl over a whistle that we simply can't hear.
When you get to the low side of the spectrum, you speak "infralyd". In infrasound wave, there can be only a few vibrations per second. Second, which makes the frequency too low so we can hear. But that does not mean that the sound is not there.
Asteroid's explosion produced a dramatic infrasound signal in the form of an "airwave" that curled around it. According to waver steam images shared by SpaceWeather.com, the asteroid is split into at least three pieces. The explosion itself released an energy equivalent to more than 6000 tons of TNT, even though the fireball itself weighs 200 tons.
Since infrasound waves have a very long wavelength, they can travel long distances. The combination of knowledge of where the asteroid struck with the magnitude of the signal recorded in Bermuda, meteor expert Peter Brown of the University of Western Ontario could conclude that it was a "multimeter size near earth asteroid".
The University of Hawaii's Institute for Astronomy wrote that this particular asteroid was probably small enough to burn up in the Earth's atmosphere (SpaceWeather.com wrote small fragments of the asteroid, known as meteorites, probably spraying the sea surface) . But space-borne objects that are somewhat larger can pose a threat to the earthlings, as evidenced by the February 2013 meteor, which injured more than 1,000 people in Chelyabinksk, Russia.