Starship Asterisk*

madtom1999 wrote:Is the dotted streak (bottom left by the cloud top) a satellite or a spinning perseid?

https://en.wikipedia.org/wiki/Upper-atmospheric_lightning#Gigantic_jets wrote:

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<<On September 14, 2001, scientists at the Arecibo Observatory photographed a gigantic jet—double the height of those previously observed—reaching around 70 km into the atmosphere. The jet was located above a thunderstorm over an ocean, and lasted under a second. On July 22, 2002, five gigantic jets between 60 and 70 km in length were observed over the South China Sea from Taiwan, reported in Nature. The jets lasted under a second, with shapes likened by the researchers to giant trees and carrots.

The Chinese Science Bulletin reported a gigantic jet event observed over a thunderstorm in mainland China on August 12, 2010. "GJ event that was clearly recorded in eastern China (storm center located at 35.6°N,119.8°E, near the Huanghai Sea)".

On August 13, 2016, photographer Phebe Pan caught a spectacularly clear wide-angle photo of a gigantic jet on a wide-angle lens while shooting Perseid meteors atop Shi Keng Kong peak in Guangdong province.>>

• Are Perseid meteor showers seeding the Mesosphere to cause normal blue
  jets to reach into the middle of the Mesosphere as gigantic red jets?

https://en.wikipedia.org/wiki/Perseids wrote:
<<While many [Perseids] arrive between dawn and noon, they are usually not visible due to daylight. Some can also be seen before midnight, often grazing the Earth’s atmosphere to produce long bright trails and sometimes fireballs. Most Perseids burn up in the atmosphere while at heights above 80 kilometres.>>

Rusty Brown in Cda wrote:"...the best image yet of this unusual phenomena..."
It's a phenomenon! There's only one of them, not several.

JCG wrote:When you say, "...this phenomena..." could you make it phenomenon? (Yeah, I know, I'm That Guy.)

geckzilla wrote:

madtom1999 wrote:Is the dotted streak (bottom left by the cloud top) a satellite or a spinning perseid?

Just an airplane.

Matt Minde wrote:What an incredible photo — at the intersection of luck and technology! This shot (frame?) couldn't have been possible without cameras that can continuously shoot 30fps of high-def video, at ISO in the thousands or tens of thousands, onto gigabytes of storage, driven by long-lasting Li-Ion batteries, and all relatively affordable!

geckzilla wrote:

Rusty Brown in Cda wrote:"...the best image yet of this unusual phenomena..."
It's a phenomenon! There's only one of them, not several.

JCG wrote:When you say, "...this phenomena..." could you make it phenomenon? (Yeah, I know, I'm That Guy.)

A venial mistake. Hopefully not one to lucubrate over or detract from the auriferously wonderful photo. To some, it may stultify the learning objective, though.

(I do so enjoy dictionary.com's Word of the Day.)

JCG wrote:When you say, "...this phenomena..." could you make it phenomenon? (Yeah, I know, I'm That Guy.)

Ann wrote:I'd love to know what causes the colors.

This jet lightning is purple to violet near bottom and red at top. Could this be related to blue jets and red sprites, in that the blue jets are lower than the red sprites? Could both these phenomena (or related ones) be seen at different levels of one huge jet?

Ann

Ann wrote:
I'd love to know what causes the colors.

This jet lightning is purple to violet near bottom and red at top. Could this be related to blue jets and red sprites, in that the blue jets are lower than the red sprites? Could both these phenomena (or related ones) be seen at different levels of one huge jet?

https://en.wikipedia.org/wiki/Plasma_globe wrote:

<<A plasma globe or plasma lamp is usually a clear glass sphere filled with a mixture of various gases (most commonly neon, sometimes with other noble gases such as argon, xenon and krypton) at nearly atmospheric pressure.>>

ARGON

• blue jets are from ionized nitrogen atoms that regain an electron after being ionized;
  
  while red sprites are from ionized nitrogen atoms that return to their ground state.
  
  Purple to violet gigantic jets are a combination (and/or) ARGON.

https://en.wikipedia.org/wiki/Aurora wrote:
<<Auroras result from emissions of photons in the Earth's upper atmosphere, above 80 km, from ionized nitrogen atoms regaining an electron, and oxygen atoms and nitrogen based molecules returning from an excited state to ground state. They are ionized or excited by the collision of particles precipitated into the atmosphere. Both incoming electrons and protons may be involved. Excitation energy is lost within the atmosphere by the emission of a photon, or by collision with another atom or molecule:

oxygen emissions

• green or orange-red (630.0 nm), depending on the amount of energy absorbed.

nitrogen emissions

• blue: if the atom regains an electron after it has been ionized,
  red: if returning to ground state from an excited state.

Oxygen is unusual in terms of its return to ground state: it can take three quarters of a second to emit green light and up to two minutes to emit red. Collisions with other atoms or molecules absorb the excitation energy and prevent emission. Because the highest atmosphere has a higher percentage of oxygen and is sparsely distributed such collisions are rare enough to allow time for oxygen to emit red. Collisions become more frequent progressing down into the atmosphere, so that red emissions do not have time to happen, and eventually even green light emissions are prevented. This is why there is a color differential with altitude; at high altitudes oxygen red dominates, then oxygen green and nitrogen blue/red, then finally nitrogen blue/red when collisions prevent oxygen from emitting anything.>>

thomastank68 wrote:
The correct term for this phenomena is a "Sprite" (or "Lightning Sprites").

Will APOD correct all references to Lighting Jets?

thomastank68 wrote:The correct term for this phenomena is a "Sprite" (or "Lightning Sprites").

Will APOD correct all references to Lighting Jets?