The color of the Aurora depends on the altitude and the atom being struck by solar radiation (causing excitation). At higher altitudes, there is more Atomic Oxygen than Nitrogen, leading to the common color stratifications you see.
500-200 km altitude
— Atomic Oxygen — Red
— Atomic Oxygen — Greenish-Yellow
— Ionized Nitrogen — Blue/Purple
— Nitrogen (N2) — Crimson
Oxygen only emits red at higher altitudes because once it’s excited, it takes a longer time to emit red than it does green. Why is that important? Well, at lower altitudes there is more Nitrogen for the Oxygen to bump into and absorb that excitation-energy before it gets a chance to emit red light. In this case, where the collision occurs, the Oxygen will emit Green and at low enough altitudes the Nitrogen-Oxygen collisions eventually prevent Oxygen from emitting any light at all.
During stronger storms, high energy solar particles will reach lower in the atmosphere and cause the Crimson emission from Nitrogen, creating a deep-red band at the lower edge of the aurora. Other elements emit light too, like Hydrogen (Blue) or Helium (Purple) which are at higher altitudes.
apparently i can apply for “overdraft protection” that allows me to spend up to $500 more than my entire account balance all at once
this sounds like the first part of a tcg gimmick play where i come out with net profit and no soul but for which i’m missing half the cards
turns out you’re wrong, sherlock holmes. i don’t do any kind of farming or professionally take care of dogs or anything you said. i threw on all this shit to see which and how many wild assumptions you’d make about me from one random glance, like an asshole. and you did. you made so many assumptions about my life just by taking one look, you asshole. here’s an assumption for you: sherlock holmes is a huge jackass