Thus, the meaning of once in a blue moon is not too difficult to guess ... has a silvery edge or a silver lining. But think of dark clouds behind which the sun is hidden. As a cloud comes out ...

The same camera system is to record the dust cloud from a much larger lander, the Blue Moon Mark 1, which Blue Origin, Jeff Bezos’ rocket company, plans to send to the moon later this year.

UK-based Blue Skies Space has announced that it will build a fleet of satellites to map the early universe from lunar orbit. The project called RadioLuna is being funded by the Italian Space Agency ...