A really starry sky seems vast—but all we’re looking at is our very local neighborhood. On the very best nights, we can see up to about 2,500 stars roughly one hundred-millionth of the stars in our galaxy, and almost all of them are less than 1,000 light years away from us or 1% of the diameter of the Milky Way.
read more The Fermi Paradox – Wait But Why.

