A huge asteroid about the size of a football field swept Earth last month, drawing astronomers into oblivion. The incident was even more serious as the 2019 OK space rocket swept the Earth at a distance of 40,400 miles (65,000 km) – just one fifth of the distance to the moon. Although it is very unlikely to appear any time soon, an apocalypse asteroid can actually hit the Earth one day.
The damage that an asteroid can inflict on Earth depends on three factors: its size, velocity, and composition.
The composition of an asteroid is determined mainly by how close it is to the sun.
Those closest to the Sun are predominantly carbon, while those farther away are composed of silica rock.
Even humble asteroids tossing from the sky will boast a lot of energy.
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If a house-sized asteroid hits Earth at 30,000 mph, it would boast an amount of energy roughly equal to the 20-pound bomb that destroyed Hiroshima.
Such an asteroid can equalize reinforced concrete buildings half a mile (0.8 km) from the ground zero, significantly damaging any city.
An asteroid similar in size to a 2 0-storey building (200 feet) has energy equal to the largest nuclear bombs produced today – up to 50 megatons.
Such a cosmic rock would flatten concrete buildings even five miles (eight kilometers) from the ground zero.
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This could subsequently obliterate most major cities in the United States.
Even a wide-mile asteroid is known. to exist that have the destructive power of 1 million megaton nuclear bombs.
This is the energy equivalent 10 million times larger than the Hiroshima leveling bomb.
It is capable of equalizing anything within 100 to 200 miles of earth zero.
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If a wide-mile asteroid hits London directly, it would destroy everything for Brussels and Amsterdam, and it could cause 1,000 miles out – it's as far away as Sarajevo and Naples.
The amount of dust and debris thrown into the atmosphere will block out sunlight and cause the death of most living things on Earth.
If an asteroid of this size lands in the ocean, it would trigger tidal waves, hundreds of feet high, that would completely obliterate the coastlines in the area.
In 2028, the asteroid 1997XF11 will come dangerously close to Earth, but will miss the planet.
If something were to change and hit the Earth, a mile-wide asteroid would hit the Earth by approximately 30,000 mph.