Did the solar system 'bounce' finish the dinosaurs?
May 2nd, 2008The sun’s movement through the Milky Way regularly sends comets hurtling into the inner solar system – coinciding with mass life extinctions on earth, a new study claims.
Scientists at the Cardiff Centre for Astrobiology built a computer model of our solar system’s movement and found that it “bounces” up and down through the plane of the galaxy. As we pass through the densest part of the plane, gravitational forces from the surrounding giant gas and dust clouds dislodge comets from their paths. The comets plunge into the solar system, some of them colliding with the earth.
The Cardiff team found that we pass through the galactic plane every 35 to 40 million years, increasing the chances of a comet collision tenfold. Evidence from craters on Earth also suggests we suffer more collisions approximately 36 million years. Professor William Napier, of the Cardiff Centre for Astrobiology, said: “It’s a beautiful match between what we see on the ground and what is expected from the galactic record.”
The periods of comet bombardment also coincide with mass extinctions, such as that of the dinosaurs 65 million years ago. Our present position in the galaxy suggests we are now very close to another such period.
While the “bounce” effect may have been bad news for dinosaurs, it may also have helped life to spread. The scientists suggest the impact may have thrown debris containing micro-organisms out into space and across the universe.
Centre director Professor Chandra Wickramasinghe said: “This is a seminal paper which places the comet-life interaction on a firm basis, and shows a mechanism by which life can be dispersed on a galactic scale.”
The paper, by Professor Napier and Dr Janaki Wickramasinghe, is to be published in the Monthly Notices of the Royal Astronomical Society.
Source: Cardiff University
Aug 14, 2007 |
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The next one will be in 5 million years!
If the time between events is 35 million years, the last one after the dinosaurs was 30 million years ago, so we have another 5 million years to come up with better movies than "Armagedon".
I don't think we will have to worry about that. If we don't stop the global warming problem, the earth will be like Venus way before that.
By "civilization surviving" I mean that humans will retain current levels of technology and existing knowledge not that we'll still be driving SUVs and importing bananas.
You're thinking of something else.
Mercury_01, no, you are indeed correct, although 2012 isn't the year of best alignment, it was actually around 1998 or so. Supposedly the Mayan's depicted this (highly controversial) - http://alignment2...isGA.htm
Now, as to what the actual significance of this is... well, that's lost on me. Astrology and science aren't the best of friends :P
http://answers.go...d=576560
1. Biological Frame of Mind
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3. Mind-Heart sensitive Index Frame
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4. Noble Cause : Human-Being, Environment, Divine Nature and Harmony
Reproduced from:
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Not that I know. I am from Costa Rica
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