The week of June 29-July 5 takes us from Lunar Day 9 to Day 16. This week we will highlight Mare Imbrium, viewable throughout the week. Mare Imbrium: [±NW/F8] The Imbrium basin was created 3.9 billion years ago when an
Mare Imbrium: Vast Lava Plain Within the Imbrium Basin on the Moon
![Mare Imbrium: Vast Lava Plain Within the Imbrium Basin on the Moon Mare Imbrium: Vast Lava Plain Within the Imbrium Basin on the Moon](http://andrewplanck.com/wp-content/uploads/2020/06/Mare-Imbrium-the-Imbrium-basin-was-created-3.9-billion-years-ago-when-an-asteroid-60-miles-in-diameter-slammed-into-the-Moon-at-10-miles-per-second-and-blasted-out-a-720-mile-wide-crater-640x350.png)