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Bottom line, two and a half Tsar Bomba's going off on the moon or earth would not be an extinction level event, far far far from it, and if one went off on the moon, zero effect to earth. Good enough for you?
That is the equivalent of a 4 km comet strike. I just didn't pull that out of a hat. Things are way over exaggerated.
The major seismic shaking will arrive approximately 20 seconds after impact.
Richter Scale Magnitude: 9.4
Mercalli Scale Intensity at a distance of 100 km:
General panic. Damage considerable in specially designed structures; well-designed frame structures thrown out of plumb. Damage great in substantial buildings, with partial collapse. Buildings shifted off foundations. Serious damage to reservoirs. Underground pipes broken. Conspicuous cracks in ground. In alluviated areas sand and mud ejected, earthquake fountains, sand craters.
Most masonry and frame structures destroyed with their foundations. Some well-built wooden structures and bridges destroyed. Serious damage to dams, dikes, embankments. Large landslides. Water thrown on banks of canals, rivers, lakes, etc. Sand and mud shifted horizontally on beaches and flat land. Rails bent slightly.
Energy before atmospheric entry: 1.06 x 10^23 Joules = 2.54 x 10^7 MegaTons TNT
The average interval between impacts of this size somewhere on Earth during the last 4 billion years is 5.5 x 10^7 years
You are also aware that atomic, in this case hydrogen blasts have a greater effect detonated above ground than after they land, right?
I really don't link much when I respond to things I see as exaggerations because I gathered my data from so many different sources throughout so many years.
Originally posted by paearmor
Most the Earth is water, so chances are it would hit in the ocean (Pacific probably). But if it hits land and has a good angle and dense enough composition could and would put a significant amout of debris in the atmosphere. And an ocean hit would probably make a large tsunami. We would need to know a lot more info before just taking guesses. Has its trajectory been updated? Are there any other sources for its trajectory to verify? I hope its a comet, but Im still thinking its a brown dwarf, neutron star or something along those lines. Isnt this the thing that "lit up" for no reason at all a while back???
Originally posted by hereitcomesskippy
You know that Planet X Movie coming out in May called "Melancholia"...Wouldn't it be wild if the kid's name in the movie was "Leo"? ...Oh wait, it is... Check it out for yourself. What do you think of this? A "Leo" discovers the killer asteroid in the movie Deep Impact. Another Leo discovers comet Elenin. There is a kid named Leo in this new planet X movie. Comet Elenin is also known as "X1". Comet Elenin will be approaching us from the constellation Leo. The Sphinx which has the body of a Lion (Leo) stares off into the night sky waiting for something to return....
From Graham Hancock: -"we have demonstrated with a substantial body of evidence that the pattern of stars that is "frozen" on the ground at Giza in the form of the three pyramids and the Sphinx represents the disposition of the constellations of Orion and Leo as they looked at the moment of sunrise on the spring equinox during the astronomical "Age of Leo" (i.e., the epoch in which the Sun was "housed" by Leo on the spring equinox.) Like all precessional ages this was a 2,160-year period. It is generally calculated to have fallen between the Gregorian calendar dates of 10,970 and 8810 BC. (op. cit., p.189)"
Ok follow me here.... The comet Elenin is supposed to have an orbital period of 11,830 years. (According to Wikipedia). That would put its last appearance on earth roughly in the vicinity of time when the Sphinx was said to have been built. Of course we can't be sure of the exact date of either, but they are close.
A lot to think about.... One more coincedence... The release date for the movie Melancholia is May 26th. "Comet" Elenin will be closest to earth on September 26th.