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
Unique Features of Tycho the Moon Crater
The week of February 18-24 takes us from Day 14 through Day 20. This week we will highlight the crater Tycho, viewable on Monday (essentially full moon) and for most of the week. Tycho: [SW/P8; L=11°W] On Day 8, we
The Brightest Comet this Year and an Admirable Moon Crater
The week of December 3-9 takes us from Day 26 to Day 2. Tuesday morning around 4:00 a.m. will be the only practical opportunity to view the Moon. This week we will highlight the crater Seleucus and Comet 46/P Wirtanen.