Are asteroids a threat to us coursework

It’s a lot like two roads intersecting, one going over the other using an overpass. All day long, cars are driving on both roads, but every now and again one car will pass directly over another. At that moment both cars are in the same spot over the Earth’s surface. Neither car is related to the other: One may be on one road heading east, the other on the other road headed north. They came from different places, and they have different destinations, but happen to cross at the same time. It’s a coincidence these two cars happen to be at the same place at the same time, but it’s inevitable that some two cars would do this during the day.

Stony asteroids with a diameter of 4 meters (13 ft) impact Earth approximately once per year. [36] Asteroids with a diameter of roughly 7 meters enter Earth's atmosphere with as much energy as Little Boy (the atomic bomb dropped on Hiroshima , approximately 15 kilotonnes of TNT) about every 5 years. [36] These ordinarily explode in the upper atmosphere , and most or all of the solids are vaporized . [37] Every 2,000–3,000 years, objects produce explosions of 10 megatons comparable to the one observed at Tunguska in 1908. [38] Objects with a diameter of one kilometer hit the Earth an average of twice every million years. [6] Large collisions with five kilometer objects happen approximately once every twenty million years. [36]

It is just another day at the National Aeronautics and Space Administration (NASA), a few astronauts were repairing a satellite until, out of nowhere, a series of asteroids came crashing into the shuttle, destroying it. These asteroids also decimated New York soon thereafter. Then, NASA discovered that there is an asteroid roughly the size of Texas heading towards the Earth, and when it does hit the Earth, the planet itself and all of its inhabitants will be obliterated, worse, the asteroid will hit the Earth in 18 days. Unfortunately, NASA's plans to destroy the asteroid are irrelevant. That is when the . military decides to use a nuclear warhead to blow the asteroid to pieces. Then, scientists decide to blow the asteroid with the warhead inside the asteroid itself. The only man to do it, is an oil driller named Harry Stamper and his group of misfit drillers and geologists. As he and his drill team prepare for space excavation, the asteroid is still heading towards the Earth. When... Written by John Wiggins

The innermost of these are the Kuiper-belt objects , called "objects" partly to avoid the need to classify them as asteroids or comets. [26] They are thought to be predominantly comet-like in composition, though some may be more akin to asteroids. [27] Furthermore, most do not have the highly eccentric orbits associated with comets, and the ones so far discovered are larger than traditional comet nuclei . (The much more distant Oort cloud is hypothesized to be the main reservoir of dormant comets.) Other recent observations, such as the analysis of the cometary dust collected by the Stardust probe, are increasingly blurring the distinction between comets and asteroids, [28] suggesting "a continuum between asteroids and comets" rather than a sharp dividing line. [29]

Are asteroids a threat to us coursework

are asteroids a threat to us coursework

The innermost of these are the Kuiper-belt objects , called "objects" partly to avoid the need to classify them as asteroids or comets. [26] They are thought to be predominantly comet-like in composition, though some may be more akin to asteroids. [27] Furthermore, most do not have the highly eccentric orbits associated with comets, and the ones so far discovered are larger than traditional comet nuclei . (The much more distant Oort cloud is hypothesized to be the main reservoir of dormant comets.) Other recent observations, such as the analysis of the cometary dust collected by the Stardust probe, are increasingly blurring the distinction between comets and asteroids, [28] suggesting "a continuum between asteroids and comets" rather than a sharp dividing line. [29]

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