Let's Find Out - Andromeda and the Local Group (Space, Science, Astronomy, Facts) | ASMR

Episode Date: July 2, 2019

An over view of the most massive celestial neighbor in the local group, Andromeda. We also discuss some of the main characteristics of the other nearby galaxies that we are gravitationally bound to. Thanks for listening! #asmr #space #galaxy #andromeda [e-mail]

Andromeda, especially because we didn't realize the cluster of stars that we see around us are actually a majority of them are really just galaxy, which is just an island, a gravitational island in the universe, if not trillions, created by, I'd say a very ASMR-esque tone in style. I highly recommend you go check it out. Hopefully with any luck, I'll... My future self will remember to put the link in the description. I'm trying to use this book. Visible to the naked eye and studied by Persian astronomers. The Andromeda Nebula

was thought to be a part of the Milky Way, which makes you wonder what it is that we used to think our Milky Way was. Analogous to, analogous to being in a cave. Your echo, you have no idea how big the cave is or

what's right in front of you. And for, as a species, takes light a hundred thousand years to a scale of the universe that we're aware of. Sefied variable. Once he realized that he crossed it out, he crossed out the end. The reason he added the exclamation,

point was because he knew that this variable would allow him to calculate the distance and of course mysteries in cosmology back then. I mean, still really is. Still really is like exactly how certain objects are. Verify with evidence. Seviate variables are based on their characteristic periods. And so we know that this period of the V1 Cepheid variable star, distances to stars were measured in thousands of light years. After V1, the universe got much, much bigger.

Series Cepheid variables, okay. Page 42. CGI, that Discovery Channel, you know, the universe, shows like that use nowadays. They're getting bitter but... Uh, okay, it's... those shows are... they used to really impress me, but, uh, they seem to be just a lot more sephiate variables here. See if I can make sense of what I'm looking at. The history of cosmology. Andromeda is a, is a beautiful barred spiral galaxy with two thousand spiral arms that glow a massive number of new stars.

This is a lot like our Milky Way. It evolved significantly. We changed physiologically. We created and lost great civilizations. And we built telescopes that caught the light when it finally reached our planet. Andromeda has a, I guess I assume, all galaxies, has a central black hole. Here we see the, at the center of Andromeda.

Sharpest visible light image ever made of the nucleus of an entire external galaxy. You can see here the blue glow around the center. Central black hole, our Milky Way suggests that it actually might be a full of 54 galaxies in our local group. Andromana is the largest. The Milky weighs the second and Triangulum is the third galaxies. So most of these are orbiting 1,000 light years. So half as the irregular galaxy is one of our closest. They consider prototypical of the earliest fragmentary galaxies existed.

And that is that GC-6822 is unusually high. as its unusually high abundance of that's supposed to be Roman emerales, the region, emission, and nebula. These are visible surrounding the smaller galaxy, particularly towards the upper right. You can see up there, it might belong to our 1996. Sagittarius dwarf is the closest, and in fact it's interestingly being slowly ripped apart by our galaxy. is the furthest away. Six globular clusters orbiting it. See if I can...

So in our book here, it looks like we only have a short section on the local group, but we just learned there are distances except that there are no conspicuous giant ellipticals or barred galaxy because we're inside it. You don't easily see its large scale structure. The galaxy has several small magillanic clouds, clearly visible ones, could be many,

and very faint. Give us an indication of how up to date it is, that the science, the local group at least, can't imagine we've discovered a whole lot like things that would fundamentally be 26. So it is evident consistency and motion in the skies, and the stars and the plants. So many ship is uncertain. It's generally assumed that the group includes all galaxies of a distance to one mega parsec, which I could look it up, I'm sure. I want to say it's short for PC. Parsec is the other way around the 13th, which makes sense. I suffer obscuration, so an intrinsically bright nearby galaxy, therefore could be heavily reddened and appear faint optically.

A brighter in the infrared, several heavily reddened galaxies are known, some of which are probably in the local group. Some vaguely interesting stuff in there. Large and small may be seen in the southern sky. 70,000 light years away. Small is about 200,000 red. LMC, for short, is the brightest galaxy in our sky, contains several billion stars, and many stars are still forming in it. The small Magellanic Cloud, or SMC, for short, contains at least several hundred million stars.

Like the LMC, there's still a lot of formations taking place in it. Supernova N63A and 1987A They were listed about 160,000 light years away. 160 of heated material from the X-ray data surrounded by the shell, representative of the ambient gas being shocked. God, that's the crazier is that we... That's really cool.

The relativity of time. Load things down a lot. We'd see bacteria living out long, long lives. If we sped everything up, we'd see in galaxies, entire galaxies, and groups, local groups like ours, around a star. Except crashing into each other and exploding. Well, I guess not really exploding, but... certainly being torn apart, ripped.

So the StoC, 2074, 170,000 light years away. Region is a firestorm of raw stellar creation, nearby supernova explosion ridges. Fiercely is the, do you that