The week of April 15-21 takes us from Day 11 to Day 17. This week we will highlight Sinus Iridum, viewable on Monday evening. Sinus Iridum: [NW/E6] Sinus Iridum (the Bay of Rainbows), located in the northwest sector of Mare
The Bay of Rainbows and Black Holes
![The Bay of Rainbows and Black Holes The Bay of Rainbows and Black Holes](http://andrewplanck.com/wp-content/uploads/2019/04/Sinus-Iridum-the-Bay-of-Rainbows-located-in-the-northwest-sector-of-Mare-Imbrium-640x350.png)