Skywatchers of ancient times recognized the night sky as a way to measure time. Not only does it seem to revolve around the Earth every night, but it also appears […]
Dennis Mammana
Dennis Mammana is an astronomy writer, author, lecturer and photographer working from under the clear dark skies of the Anza-Borrego Desert in the San Diego County backcountry. Contact him at dennis@mammana.com and connect with him on Facebook: @dennismammana. The opinions expressed are his own.
