Open Thread

The moon transits the earth from 31 million miles. Posted to YouTube by The Bad Astronomer. Happy Earth Day. Happy International Year of Astronomy, too. Open thread below...

Comments

We welcome relevant, respectful comments. Any comments that are sexist or in any other way deemed hateful by our staff will be deleted and constitute grounds for a ban from posting on the site. Please refer to our Terms of Service (revised 3/17/2016) for information on our posting policy.