A six hour / 600 megaton atomic Dodge
4581 Asclepius 4581 Asclepius (pronounced /əˈskliːpiəs/ ə-SKLEE-pee-əs) is a small asteroid of the Apollo group that makes close orbital passes with Earth.
Discovered in 1989 by American astronomers Henry E. Holt (1929-) and Norman G. Thomas (1930-), Asclepius is named after the Greek demigod of medicine and healing.
Asclepius passed by Earth on March 22, 1989 at a distance of 680,000 km (0.68 Gm).
Although this exceeds the moon's orbital radius, the close pass received attention at that time, especially since the asteroid passed through the exact position of Earth only six hours earlier.
"On the cosmic scale of things, that was a close call," said Dr. Henry Holt.
Geophysicists estimate that collision with Asclepius would release energy comparable to the explosion of a 600 megaton atomic bomb.
Santorini
NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team
This image of Santorini was acquired on November 21, 2000 and covers an area of 18 by 18 km.
The eruption of Santorini in 1650 B.C. was one of the largest in the last 10,000 years.
About 30 cubic kilometers of magma was erupted, forming a plinian column 36 km high.
The removal of such a large volume of magma caused the volcano to collapse, producing a caldera.
Ash fell over a large area of the eastern Mediterranean.
The eruption probably caused the end of the Minoan civilization on the island of Crete.
The largest island is Thera, and the smaller is Therasia.
The Kameni Islands (dark in the image center) formed after the caldera., with the most recent eruptions occurring in 1950. The image is centered at 36.4 degrees north latitude, 25.4 degrees east longitude.
1 gallon of gasoline = 1.17e8 joules1 kiloton = 4.184e12 joules
1 Hiroshima = 13 kilotons
1 megaton = 4.184e15 joules = 77 Hiroshimas
1 Bikini Atoll = 15 megatons
1 Mount St. Helens = 25 megatons
1 Tunguska = 40 megatons = 1.6 Mt. St. Helens
1 Krakatoa = 150 megatons = 3.75 Tunguskas
1 Santorini/Thera = 600 megatons = 4 Krakatoas
1 Shoemaker-Levy = 6e6 megatons = 10000 Theras
1 Dinosaur Killer = 8e7 megatons = 13 Shoemaker-LevysUnits
from http://www.projectrho.com/rocket/rocket3t.html
How many atomic bombs will it take to destroy the world?
Answer:
"The total global nuclear arsenal is about 30,000 nuclear warheads with a destructive capacity of 5,000 megatons (5,000 million tons of TNT).
An air burst (detonating a bomb above the surface) would produce far more damage and death via radioactive fallout than one detonating at ground level.
A single 100 megaton air burst would be enough to cause a nuclear winter and pollute the Earth for many many years. Theoretically, a 100 megaton bomb detonated below ground could produce a massive earthquake and the constant explosions of a full blown nuclear war may also cause numerous earthquakes around the globe. But this would not destroy the world nor all human life.
Globally there are enough nuclear bombs to completely kill every human 50-60 times. It would only take the detonation of 500-600 bombs to kill every person." Eric M Jones
"The total global nuclear arsenal is about 30,000 nuclear warheads with a destructive capacity of 5,000 megatons (5,000 million tons of TNT).
An air burst (detonating a bomb above the surface) would produce far more damage and death via radioactive fallout than one detonating at ground level.
A single 100 megaton air burst would be enough to cause a nuclear winter and pollute the Earth for many many years. Theoretically, a 100 megaton bomb detonated below ground could produce a massive earthquake and the constant explosions of a full blown nuclear war may also cause numerous earthquakes around the globe. But this would not destroy the world nor all human life.
Globally there are enough nuclear bombs to completely kill every human 50-60 times. It would only take the detonation of 500-600 bombs to kill every person." Eric M Jones
See the discussion page: wiki.answers.com
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