milky way galaxy, n.All

The Milky Way galaxy has a black hole at its center millions of times the mass of the Sun. (a million times is roughly the difference between the thickness of 1 sheet of paper and a 30 story building)

There are more trees on Earth than stars in the Milky Way at 3 trillion (with a mere 100-400 billion stars in the galaxy)

If the sun were the size of a cell, the Milky Way would be the size of the United States

Galaxies are numerous --- there are perhaps as many galaxies in the Universe as there are stars in the Milky Way (~100 billion)