Before you laugh your ass off at this question, know that A) I've searched as much as I could (started looking for it last year) and B) I'm a hobbyist linguist/historian, NOT a fan of astronomy (i.e. my knowledge is limited) and C) only need this one question answered:

The question is very simple: is it possible to calculate roughly when redness in the horizon disappears? The closest answer I've found for this was to see when does nautical twilight end, which would then leave twilight in it's last phase (astronomical), which in turn presents a dark blue sky, free of any red colors. I tried finding live footage that supports my theory but to no avail (the quality was low, the footage didn't focus on what I was looking for, etc.). So I suppose one way to ask this question would be: does the end of nautical twilight mark the disappearance of "redness" in the horizon? Or does that happen a little earlier/later? If yes, when?

Currently been camping in outback Australia, in the Kimberley, WA.

My partner and I last night saw stars moving around in an erratic/strange way?

We both watched this one star, travel extremely fast downwards, stopping suddenly only to go back up, then side ways, etc.. this thing/star went in all different directions.

Saw this happen with 2 other stars at different points through the night.

We both were so confused…

It definitely was not a plane! Can a satellite can change directions that quickly?

Can someone please explain?

Thank you!

Seeing the recent discovery of the super massive black hole nearby a companion star how likely is it that this is not a fluke but perhaps something more common than we think in astronomy?

Could our own sun have a "companion" black "star" orbiting nearby waiting to be discovered? Only missed so far due to its much smaller mass and lack of light emission.

What would the implications be of such a discovery in our very own solar system?

EDIT: For added context, the idea is that this black companion "star" would be much lower in mass than its companion star and in our case perhaps be planet size, and not on the scale of known detected black holes. Postulating that it is its ultra high spin and resulting magnetic moment that is the dominant force effect on nearby bodies.

It’s 3:51 AM, I live in northern New York, I just finished up an essay for school and was taking a piss out my window (don’t ask) and I see a MASSIVE comet/shooting star. I’ve seen meteor showers before but nothing compared to what I just witnessed. It was blue with an orange tail and must’ve been in the sky for a good 6 seconds…

Does anyone know what I might’ve saw?

Telescopes for other fields such as sailing have their viewscopes directly at the bottom of the telescopes. I noticed all telescopes meant for stargazing from cheap $30 ones meant for kids to giant premium models for the civilian markets that cost hundreds of $$$ if not even thousands $$$$ to the stuff used by professional astronomers and other scientists at observatories and planetariums all have the telescopes designed to have the viewing lenses placed to be viewed from the side angle. Why I must ask?

I'm making a game with a randomly generated galaxy, so I need to somehow generate stars. I've found a helpful google spreadsheet with approximated formulas for getting all the characteristics of a star from its mass, so it is the only thing I actually need to generate.

Unfortunately, even after searching for a few days, I was unable to find any data about the distribution of this value. The only thing I've found is the "Initial mass function", which is a PDF and I'm not familiar with these. I've even tried to find a dataset, containing masses of some stars, to find a suitable distribution myself, but this too was unsuccessful.

So it would be great if any of you could give me some values / tell me how to use the Initial mass function, or in any way help me with my question!