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The Milky Way Galaxy.
Wavelengths is what allows astronomers redshift a background galaxy that is covered up. This is due to being close to the foreground galaxy.
An elliptical galaxy
duh were living in a barred galaxy
It's not possible that we could cross a galaxy. But astronomers study galaxies with huge telescopes.
Astronomers have detected a quasar in a distant galaxy.
ancient astronomers thought it was spilled milk.
Astronomers. They study all things about space.
be quit @$$ #**()
Observing another spiral galaxy, gives us a good idea about the structure of our own Galaxy.
A black hole or a worm hole :) good luck
infrared