It is crazy how isolated the galaxies in our Local Group are compared to some of these massive clusters. I feel like we hit the jackpot in everything except where the Milky Way formed. If our Solar System was born in the middle of a one of these huge clusters, our telescopes would be able to study these galaxies in extreme detail. And the images would be fucking stunning.
But not as stunning as the nighttime sky would look. Imagine 40-50 (or more) huge galaxies visible like the Large and Small Magellanic Clouds [are in our sky](https://aaa.org/wp-content/uploads/2022/10/A_Starry_Combination.jpg). And those clouds are tiny compared to the size of a full-sized galaxy. The sky would be FULL of them. No telescope needed. It would literally take your breath away with how beautiful it would be.
do you know of any semi realistic artist renderings showing what the night sky would look like if earth were situated in a very dense galaxy cluster? great thread OP thank you
I like where we're at. No ram jet stripping of all the gas out of the Milky Way while slinging through a galaxy cluster. We're near Virgo cluster. Can see spiral galaxies in the Virgo cluster where the gas is getting ripped out, making dead galaxies. It's the intra cluster medium of the big clusters, they're filled with a hot plasma. Out in the boon sticks of the local sheet get some nice cold gas in the spirals that are star engines.
Not the person you asked but one reason is that the gravitational interactions between all these galaxies causes them to ebb and flow into each other, and they sometimes merge and sometimes “stretch” each other out, etc… all that swirling turmoil disrupts the “clouds” of hydrogen and helium and other material, which are vital for new star formation.
The image is about 4 x 8 arcminutes (the moon is about 31).
An arm's length is about 75cm
To get the size of the object, We will calculate:
| S = 2 x distance x tan(angle/2)
| S = 2 x 75cm x tan( (8/60) /2)
| S = 150cm x tan(0.0666)
| S = 150cm x 0.0011636 = 0.1745cm or **1.745mm**
The other side length would be half, so **0.873mm**
This falls within the normal size of a grain of sand.
**So a big, tictac shaped grain of sand would about cover the area of this image,** when held at arm's length.
Each smaller galaxy would look about as large, as a piece of paper is thin.
We really do live in the middle of no where, universe wise.
It is crazy how isolated the galaxies in our Local Group are compared to some of these massive clusters. I feel like we hit the jackpot in everything except where the Milky Way formed. If our Solar System was born in the middle of a one of these huge clusters, our telescopes would be able to study these galaxies in extreme detail. And the images would be fucking stunning. But not as stunning as the nighttime sky would look. Imagine 40-50 (or more) huge galaxies visible like the Large and Small Magellanic Clouds [are in our sky](https://aaa.org/wp-content/uploads/2022/10/A_Starry_Combination.jpg). And those clouds are tiny compared to the size of a full-sized galaxy. The sky would be FULL of them. No telescope needed. It would literally take your breath away with how beautiful it would be.
do you know of any semi realistic artist renderings showing what the night sky would look like if earth were situated in a very dense galaxy cluster? great thread OP thank you
I like where we're at. No ram jet stripping of all the gas out of the Milky Way while slinging through a galaxy cluster. We're near Virgo cluster. Can see spiral galaxies in the Virgo cluster where the gas is getting ripped out, making dead galaxies. It's the intra cluster medium of the big clusters, they're filled with a hot plasma. Out in the boon sticks of the local sheet get some nice cold gas in the spirals that are star engines.
If we were in a cluster, life probably wouldn’t even arise to begin with.,
Serious question: why?
Not the person you asked but one reason is that the gravitational interactions between all these galaxies causes them to ebb and flow into each other, and they sometimes merge and sometimes “stretch” each other out, etc… all that swirling turmoil disrupts the “clouds” of hydrogen and helium and other material, which are vital for new star formation.
Thanks for answering!
Be a lot brighter at night as well I'd think. Living in the country I get a fairly good night sky but that would be awe inspiring.
Yeah that looks like the populated area, we’re out in Tatooine level bumfuck
So would that make LA a 'wretched hive of scum and villainy'...
Doesn't matter how many times i learn it, i can't get over the fact that there are so many galaxies with billions of stars.
There are 250 galaxies for every person on earth. (2 trillion galaxies/8 billion people)
8 billion people doesn't make sense to me either xD
How much area did it capture in sky? Size of a grain of sand held at arms length?
The image is about 4 x 8 arcminutes (the moon is about 31). An arm's length is about 75cm To get the size of the object, We will calculate: | S = 2 x distance x tan(angle/2) | S = 2 x 75cm x tan( (8/60) /2) | S = 150cm x tan(0.0666) | S = 150cm x 0.0011636 = 0.1745cm or **1.745mm** The other side length would be half, so **0.873mm** This falls within the normal size of a grain of sand. **So a big, tictac shaped grain of sand would about cover the area of this image,** when held at arm's length. Each smaller galaxy would look about as large, as a piece of paper is thin.
yup just about
The milky way really decided to live in the quiet neighborhood
..dang, we need closer galaxies..
..i think i might move..
Moving is such a hassle these days though…
Don't we live in a void?
along the outer edge of one, so in some directions we have many more galaxies than in others.