phyzguy's latest activity

I enjoy pedantically correcting minor errors of virtual strangers I will never meet in person. For example, your first bullet item...

If you're going to launch a rocket to even 10 km, you're potentially going to cross paths of commercial aircraft. I suspect that the...

AAS (the American Astronomical Society) has a free introductory astronomy textbook available online at the link below. If, after...

And yet still no punctuation nor capitalization of the second sentence.

Polaris is "up" from the north pole. North is a direction along the surface of the Earth.

One possibility, known as the Hartle-Hawking no boundary proposal, is that if you go backward in time towards the big bang, you reach a...

It's called a sun dog: https://en.wikipedia.org/wiki/Sun_dog

There are a lot of red dwarfs out there, and they live for a very long time. The flares tend to decrease as the stars age. Given the...

In what sense are current Large Language Models (LLMs), which are based on Artificial Neural Networks (ANNs), algorithmic? Do you think...

I've never understood why people say this. Depending how far the planet is from the red dwarf star, the temperature on the side facing...

So, @Line_112 , are you just going to ignore the many redshift measurements of GRBs that have been made? These measurements firmly...

Why do you think this? It is an equal area projection. So dots of the same area will cover the same area of the sphere.

Here is an equal area projection map of the Earth, similar to the GRB map. Areas are not distorted, but of course shapes are. It's not...

What's your point? It's well known that gamma ray bursts are extra-galactic. Look at the Wikipedia page, which says, "In gamma-ray...