If you had asked me yesterday about how wide is the diameter of our Milky Way galaxy, or most galaxies since ours is pretty 'average' and typical, I would have said something like 200,000-250,000 light-years. That has been the number astronomers have been thinking for some time.
But new research, technology and tools have greatly changed this value. The Milky Way is now measured to be 1.9 MILLION light-years in diameter! Wow! For just one galaxy. Check it out.
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