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More than a decade of continuous monitoring of the sky over the Iberian Peninsula being made by researchers from the Spanish Network for Research on Fireball (NWHS) has been awarded the brightest meteor record ever recorded from Spain. On July 13, 2012 at 0h 04m 51.4 s TUC (2h04m51.4s local time GMT) saw the emergence of a huge fireball that lit several regions to fragment at an altitude of 40 km. At that moment, which occurred at exactly 2h04m55.2s local time, its luminosity was really impressive, becoming similar to the Sun in its output, ie an apparent magnitude around -20. This spectacular phenomenon was produced by the entry into Earth's atmosphere at a speed of about 90,000 km / hour on a rock hurtling through interplanetary medium. Such rocks when its diameter is less than 10 meters are called meteoroids.
Very bright meteors of magnitude -15 or better have been studied which produced no potential meteorites, especially those having a cometary origin.
Originally posted by intrptr
Absolutely awesome! Thanks for pinging me!
Originally posted by intrptr
I gotta ask. These things come in from the depths of space. Any volatiles are in ice form.
Originally posted by intrptr
Are they what "lights up"?
Originally posted by intrptr
Does the material burn off in moments producing this flare of photons?
Originally posted by intrptr
How can it heat so fast to flash white light temperatures? Notice how it pulses? Like, goes bright...goes dim... goes brighter...goes dim... goes BRIGHTEST... burns out.
Originally posted by intrptr
If ever a case was to be made for a Tunguska event it would maybe be one of these, just bigger? And a longer track in the atmosphere?
Originally posted by intrptr
I wonder if explosions accompany the changes from brightest to dim?
Originally posted by intrptr
I have heard people describe crackling noises.
Originally posted by intrptr
I have seen one skip on the atmosphere, bouncing like a stone on a pond. Each time it bounced there was a shower of sparks until it shattered altogether into glowing trailers. I heard no noise. And saw no bright flashes at all. Just sorta like campfire sparks. This thing was a magnesium flare. Too cool.
Originally posted by intrptr
You seem to be well informed and enthusiastic about this subject. I may want to pick your brains about something when you get back.
Originally posted by intrptr
Briefly, what do you think of the scattered reports that Tunguska may have left traces of radioactivity behind in tree rings and mutated foliage?
Originally posted by intrptr
And what is your best explanation for the Tritium in the cretaceous boundary in earth sediments?
Originally posted by intrptr
Oh, and Shoemaker Levy 9. Could those have been nuclear explosions being the plumes were so large? Thats a simple underedumacated rundown of some theory I been working on.
Originally posted by intrptr
Let me know when you bring your data on the meteor shower. Happy viewing!
Originally posted by intrptr
Thanks for the update. It seems that the meteor shower is at its peak right now. Too cool. I walk outside at night to walk my dog and I was wondering if I am supposed to be observing one particular quadrant of the sky or are they coming anywhere at any time? Last night I spent a few looking directly up and saw not one.
Originally posted by intrptr
On the radioactive questions about Meteor and or comet strikes, I think I may have been vague about my questions.
I am interested in the idea that maybe some meteor explosive events could have been nuclear in origin, i.e., residual radioactivity from natural events involved in the detonation of the Tunguska fireball. I am not trying to explore conspiracy theories about UFO's and alien nukes, but rather that natural impact velocity, plasma and shapes of objects may have produced a fission event. There has been some accredited study done in the region of Tunguska by research scientists. Here are a couple pages from a book (202,203) about residual radioactivity:
books.google.com...
I have more on why this might be so after you read that part. It has to do with the shape of the fireball and the internal structure as well as the ionized atmosphere, sputtering occurring on the surface and velocity.
I see what you are saying now. I'll have a look at the link you provided a bit later, but I think your theory may have a flaw or two. Keep in mind I'm no expert in nuclear fission.
Originally posted by intrptr
Thanks for the link to the pics. Always cool to see them captured. Not easy.
Originally posted by intrptr
I used to own an 8" Celestron schmidt cassegrain and would occupy mountain tops outside the city looking at all the stuff. It really helped me to understand the sky and all its splendor (as well as rules of engagement). Lonely outpost.
Originally posted by intrptr
Now with Hubble and others I am even more enthralled on a casual level. I know enough about certain subjects to want to know more and may sound undereducated (because I am). I always enjoy the chance to converse with others who know more about it than I do.
Originally posted by intrptr
Thanks again for taking the time to respond, explain and hear me out.
Originally posted by intrptr
Ping me [anytime] you get news or any thing you find interesting in your field.
Originally posted by intrptr
Gemenids huh?
Originally posted by intrptr
Oh and I leave you with one or two thoughts along the line of "nuclear fission" impactors. I have studied the first atomic bomb dropped on Hiroshima. It was a simple design, called a "gun type" which fired one projectile into another inside the casing in order to produce criticality.
Really simply:
So you have this environment that slams two things together at hypervelocity inside another explosion that contains the "impact". See where this is leading?
Here is one more principle. The shaped charge:
An explosive can be shaped such that it focuses energy in a given direction. This amplifies the effect. Used as armor penetrators in warfare.
NOW imagine a big big meteor or comet that zings into the atmosphere, heating up and encasing itself in a plasma shroud. The forward facing side of the meteor has pits, or craters (or even a cave) on its surface that focuses the energy of any blast forward...
When the immovable force meets unyielding object and the pressure suddenly spikes to unimaginable...
Bang, a fission chain reaction of a small bit of matter. Even a few grams of rock would be sufficient (if criticality was achieved).
Just dinkin.
BTW there was none more qualified to measure the rads in the area around Tunguska. They were the most expert in their field.
Tunguska
I may be a bit biased, but if the majority of time you spent looking at the the sky was through the narrow field of view of a telescope...