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Are the "background noise" of the images also stars? It's the first time I realize the darker parts of the universe, while zoomed in, looks disturbingly noisy a
by bwang29 12y ago
Are the "background noise" of the images also stars? It's the first time I realize the darker parts of the universe, while zoomed in, looks disturbingly noisy and bright.
- TrainedMonkey 12y agoFrom article: "The whole galaxy contains over one thousand billion stars." so presumably yes. I would even say that we are only seeing brightest stars and clusters of stars.
- CamperBob2 12y agoAnd quite a few of the 'stars' are galaxies themselves. Lots of red-shifted spirals.
- ChrisGranger 12y agoYeah, when you're looking at the core of Andromeda, you're seeing countless stars fairly close together. That galaxy is larger than ours and contains an estimated one trillion stars. The best example of "dark" parts of the sky not being really dark is the Hubble Ultra-Deep Field. https://en.wikipedia.org/wiki/Hubble_Ultra-Deep_Field https://en.wikipedia.org/wiki/Hubble_Ultra-Deep_Field It's pretty hard to find truly dark areas of the sky when you're looking far enough. The mind-blowing part is that almost all of those bright spots are galaxies, not stars.