Gargantuan Basin

Mare Frigoris: Only Lunar Mare Patch Not Circular

The week of November 15-21 takes us from Day 12 to Day 17. This week we will highlight Mare Frigoris. Mare Frigoris: [NW-NE/D6-13; L=54°W] This is the only mare patch that isn’t even roughly circular, although its northern boundary has

Vernal Equinox – Can You Stand an Egg on its End?

The week of March 18-24 takes us from Day 12 to Day 19. This week we will highlight Mare Frigoris and the crater Shickard, viewable on Monday evening. Mare Frigoris: [NW-NE/D6-13] This is the only mare patch that isn’t even