Group of Show-Stopping Trios on the Moon

Group of Show-Stopping Trios on the Moon

The week of February 25 – March 3 takes us from Day 21 through Day 27. This week we will highlight the craters Ptolemaeus, Alphonsus, and Arzachel, viewable early Tuesday morning. Ptolemaeus, Alphonsus, Arzachel: [SW/K-L9] This is the second group

409th Anniversary of One of the Greatest Scientific Discoveries Ever Made

409th Anniversary of One of the Greatest Scientific Discoveries Ever Made

The week of Jan. 7-13 takes us from Day 1 to Day 7. This week we will highlight the crater Janssen, viewable on Thursday evening. Janssen: [SE/P13; L=40°E] Janssen is located 85 miles southwest of the Rheita Valley [SE/N14] (which