Originally posted by Rezlooper
Here is a meteor vid caught by security camera from northern MN on late Friday night, same night asThe Great East Coast Fireball of 2013
Meteor over Bigfork, MN
A security camera caught what appears to be a meteor flying through the night sky near Bigfork Saturday morning. Peter Schoon sent the video to the Northland's NewsCenter from his cabin on Kelly Lake, 22 miles SE of Bigfork.
Originally posted by FireballStorm
Originally posted by Okeyd57
Originally posted by timetothink
reply to post by SpaDe_
Twitter and Facebook.
Then I found the reports on the AMS website.
I know, I would love to see a pic or vid.
Anyone know what the make up of it could be if it appears green or is that from the atmosphere?
It is the elements burning up in the meteor, not the atmosphere's fault. I have no idea what element made it greenish because I have no idea what the temps were at the time. That's how they determine the content of a meteor, because different elements burn off at different temperatures over a period of time.
It's not quite that simple, and you are wrong about the colour of a meteor depending on composition of the meteoroid alone - the composition actually plays a minimal part in the observed colour, believe it or not.
It's a common assumption that people often make, but a meteor does not "burn". What happens is that meteors undergo a process known as ablation, where material is stripped off the outer surface of a meteoroid due to impacts with atmospheric air molecules. Due to the high energies involved molecules are split apart (ionized) into their constituent parts forming plasma, and it is the plasma that emits light at very specific wavelengths, giving a meteor it's colour.
Much of the plasma that surrounds a meteor during it's passage through the atmosphere comes from atmospheric gases such as oxygen, nitrogen, and carbon dioxide, and the wavelength of the light emitted depends on the elements involved and the the energy involved (which is related to the speed of the meteoroid).
It just happens to be the case that oxygen, when ionized emits light at a specific wavelength, which turns out to be green.
Thanks for straightening me out on that.