Peter posted a question on our Lights in The Sky page asking: Can I see the Moon’s Bay of Rainbows from Melbourne (S/E Australia)?
Yes, you can see it from Melbourne, and from anywhere on Earth. It is an ancient crater flooded with lava. A section of the crater wall remains covered by lava making it appear like a ‘bay’ opening into Mare Imbrium, the “Sea of Rains”. It is best viewed with binoculars or a telescope around the time of full Moon.