2011 08 10, 0110-0208 UT Delisle and Diophantus Geological period: Eratosthenian (-3.2 billon years to –1.1 billion years), Rukl 19 PCW Memorial Obsv., OH – Erika Rix Zhumell 16” f/4.5 on a Dobs… more →
PCW Memorial Observatory - Erika Rixwrote 1 year ago: 2011 08 10, 0110-0208 UT Delisle and Diophantus Geological period: Eratosthenian (-3.2 billon years … more →