We are a part of the Milky Way galaxy, cleverly named after the fact that our galaxy has a very milky look to it. The light emitting from the stars causes the milky appearance, but interestingly, our galaxy should be a lot brighter than it actually is.
Scientists say that our Milky Way galaxy should have about ten times the amount of stars that it does have due to the fact that there are a lot of free-floating gasses and dusts, which are the typical building blocks of stars in outer space.
What scientists say could be inhibiting star growth are magnetic fields, which surround much of the material in the outer regions of the galaxy.
In turn, these magnetic fields could be fighting gravity and preventing this matter from getting to the center of galaxy where it needs to go for the conditions to be right to form more stars.