The week of March 29 – April 4 takes us from Lunar Day 16 to Day 23. This week we will highlight a feature called The Great Eastern Chain, located in the SE quadrant of the Moon bordering Mare Fecunditatis.
The week of March 1-7 takes us from Lunar Day 18 to Day 24. This week we will highlight Rupes Cauchy, located on the eastern portion of the Sea of Tranquility. Rupes Cauchy [NE/J13]: One of the best-known faults on
The week of February 22-28 we will highlight Schröter’s Valley, visible Tuesday night. Schröter’s Valley/Cobra Head: [NW/G5-4] Schröter’s Valley is the Moon’s most impressive sinuous rille and was created when a monstrous lava tube collapsed. It begins at a volcano
The week of February 8-14 takes us from Lunar Day 27 to Day 3. New Moon is on Thursday, February 11, so for most of the week, the Moon is not visible. This week we will highlight the crater Petavius.
The week of January 4-10 takes us from Lunar Day 21 to 27. This week we will highlight Hadley Rille, viewable at midnight on Monday. Rima Hadley: [NE/G10] This feature formed as lava from a nearby volcanic vent flowed onto
The week of October 5-11 takes us from Lunar Day 18 to Day 24. This week we will highlight the crater Plinius, viewable on Monday and Tuesday evenings. Plinius: [NE/H12] Standing sentinel between Tranquillity and Serenity is the crater Plinius,
The week of August 17-23 takes us from Lunar Day 28 to Day 5. This week we will highlight the crater Janssen, observable on Sunday evening. Janssen: [SE/P13] Janssen is located 85 miles southwest of the Rheita Valley (which you
The week of July 20-26 takes us from New Moon to Lunar Day 7. This week we will highlight the craters Bürg and Lacus Mortis. Lacus Mortis: [NE/E12; L=27°E] The charmingly named “Lake of Death” is a large lava-flooded crater.
The week of June 15-21 takes us from Lunar Day 24 to New Moon. This week we will highlight the crater Gassendi, viewable early Tuesday morning. Gassendi: [SW/L5; L=40°W] Three generations of crater age can be easily observed on Mare
The week of June 1-7 takes us from Lunar Day 10 to Day 17. This week we will highlight two rilles: Rima Hesiodus and Rimae Ramsden. Rima Hesiodus: [SW/N7-M8; L=20°W] The linear rille Rima Hesiodus is a graben (a special