Owen writes that terrestrial illumination of the night sky by artificial lamps have washed out our view of the stars. The Bortle Dark-Sky Scale classifies the sky along nine points. In Galileo's time the night sky across the globe would be a Class 1. Most American suburbs are Class 5, 6, or 7.
With a homemade telescope less powerful than one you'd buy an eight-year-old, Galileo described the moon's terrain, could see that the Milky Way was made of individual stars, and that Jupiter had moons (which he called planets). Most Americans have only seen the the Milky Way in pictures, yet in Galileo's day it cast a shadow over the earth on clear nights.
Today, star-gazing is nothing like it was for our grandparents. Even from the Grand Canyon -- that vast protected area -- the brightest feature on a clear night is Las Vegas 175 miles away.
I still remember the thrill of seeing a true night sky (probably a Class 4 or 5) on a clear summer night while camping on the shores of Lake Huron 11 or 12 years ago. Having always lived in cities, I didn't know that you could see satellites streak across the sky, or that there were shooting stars every night, or even that the sky held so many stars. It hadn't occurred to me that the stars on Orion's belt were just the brightest stars. Believing my eyes, I thought the stars I could see were the only stars in that part of the sky.
I know. It's crazy. Ignorance becomes a truth if it's reinforced often enough.
How impoverished our existence is without the night sky. I need the stars to remind me of my lack of consequence -- that my life, my problems are quite small. To remind me of the vastness of all I do not know. Of the mysterious heavens. It was 1992 when the Vatican officially confirmed Galileo's findings that the Earth moved around the Sun -- only 359 years after he was tried for heresy under threat of torture by the Inquisition.
In those days to look at the night sky could be dangerous because the right mind could draw unsettling conclusions about the nature of things. Nowadays, the night sky might still have something to teach us about our place in the universe -- if only we could see it.




