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About 180 million years ago, a planet-shattering yet naturally occurring nuclear reaction may have wiped out everything on Mars, sending a shockwave that turned the planet into dry sand.
Originally posted by pcrobotwolf
reply to post by watchitburn
If that happened mars would look like a deflated basketball and it would have shifted it orbit alot.
Originally posted by pcrobotwolf
reply to post by watchitburn
If that happened mars would look like a deflated basketball and it would have shifted it orbit alot.
By the time you get up to a mile-wide asteroid, you are working in the 1 million megaton range. This asteroid has the energy that's 10 million times greater than the bomb that fell on Hiroshima. It's able to flatten everything for 100 to 200 miles out from ground zero. In other words, if a mile-wide asteroid were to directly hit New York City, the force of the impact probably would completely flatten every single thing from Washington D.C. to Boston, and would cause extensive damage perhaps 1,000 miles out -- that's as far away as Chicago. The amount of dust and debris thrown up into the atmosphere would block out the sun and cause most living things on the planet to perish. If an asteroid that big were to land in the ocean, it would cause massive tidal waves hundreds of feet high that would completely scrub the coastlines in the vicinity.
Just curious...Do we know what it looked like 180 million years ago? It could have been 50 times its current size and the orbit could have been vastly different. Maybe? I honestly don't know. Just thought the post was interesting.
Even more incredible: A natural nuclear reaction could have occurred on our own planet -- and could happen again, said Dr. John Brandenburg, a senior propulsion scientist at Orbital Technologies Corp.
Originally posted by YouAreDreaming
It would be interesting if instead of Iron some asteroids where made of highly radioactive material that when the impact happened caused a critical mass event.
Not likely but interesting to think about as Space is full of all sorts of cool and dangerous stuff.
Are the Indian remains of Mohenjo Daro and Harappa, their sudden abandonment and the apparent discovery of an ancient site with a layer of radioactive ash the best available evidence for the possibility that our ancient ancestors possessed a highly advanced technology – which might have included atomic warfare?
Studies of layered deposits laid down by lakes provide confirmation of irregularities in the chronological record Fused desert sands have been found, notably in the Egyptian desert. All the evidence seems to support the existence of an ancient nuclear war having taken place in the past.
Earth does many surprising things, for instance explosions of diamonds, volcanoes of carbonate lava, eruptions of asphalt and red lightning flashing upward toward space. But Earth's neatest trick may be the time it created a nuclear reactor all by itself.
Today we run reactors by taking uranium and enriching it in the one isotope, U-235, that fissions the most so that an energy-producing chain reaction can take place. Without enrichment, you can pile up tons of uranium and it won't make any heat. Nevertheless, in 1972 the remains of a natural, spontaneously formed uranium reactor were found in ancient rocks of the African nation of Gabon, in the Oklo uranium mine.
But there's another theory called the fission hypothesis that could account for the similar isotopic content. This idea is that the Earth and Moon both formed from a rapidly spinning blob of molten rock. This blob was spinning so rapidly that the force of gravity only just overcame the centrifugal forces at work.
In this system, any slight kick would have ejected a small blob of molten rock into orbit. This blob eventually formed the Moon.
The fission hypothesis has been studied for 150 years but ultimately rejected because nobody has been able to work out where the energy could have come from to kick a lunar-sized blob into orbit.
Now Rob de Meijer at University of the Western Cape and Wim van Westrenen at VU University in Amsterdam say they know where that kick might have come from.
Their idea is that centrifugal forces would have concentrated heavier elements such as uranium and thorium near the Earth's surface on the equatorial plane. High concentrations of these radioactive elements can lead to nuclear chain reactions which can become supercritical if the concentrations are high enough.
The question is how concentrated could these elements have become. De Miejer and van Westrenen calculate that it is quite possible for the concentration to be high enough for a runaway nuclear reaction.
This story saysGamma Ray maps of Mars point to an ancient nuclear detonation, allegedly occurring naturally.
Originally posted by watchitburn
So they are saying this detonation was equivalent to 1 Million Megaton yield device.
What are your thoughts?