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Deep field was pointed at an "empty" piece of space, what would the number be in the most populous piece of space?
by mywacaday 5y ago
Deep field was pointed at an "empty" piece of space, what would the number be in the most populous piece of space?
- issa 5y agoSpace at the scale being discussed here is uniform, so no one direction should be "more populous" than another. The "empty" here designates an area without stars easily visible from Earth. Our local area is denser in our galactic plane, in the direction of our supercluster, etc. But 13 billion lightyears in ANY direction should look about the same.
- supernova87a 5y agoOne of the key findings of astronomy / cosmology of the modern age is that the universe is exactly so uniform in all directions, at the largest scales. In a way this is support for the notion of the big bang itself. There are density differences at some distance scales which have to do with clumping of matter (galaxies) as it began forming, but those differences are not a notion of "the universe being different depending on where you look". Funny how every subdivision / suburb looks kind of the same in the shape of the roads, density of houses. It is the nature of the laws that govern how these things get built. Btw, you could see a lot more stars (not galaxies) if you pointed the telescope in certain directions, but likely that would be because you're just looking at the direction of our own galaxy (which we're at the relative edge of), instead of looking out of our galaxy to see the rest of the universe, which is made up of the kinds of places shown in these images. These images are chosen to be taken in a direction far from our galaxy's disc (thing of us as sitting on the edge of a frisbee), because if you aimed at the disc, your image would be full of the giant overwhelming circles with spikes rather than tiny grains of sand, each of which is a galaxy far far away.