By now, you have seen the Earth image by the #Artemis crew at least a hundred times. In this annotated version, several #optics effects are highlighted. It also shows how fragile planet #Earth is, with a super thin #atmosphere protecting us from the harsh vacuum of space.
Let's protect it.
@pfsmet so the sun, reflecting off the moon, is bright enough to illuminate Earth like that? I wouldn’t have expected that.
@hmallett @pfsmet if your camera/lens is good enough, yes. This photo was taken with a Nikon 5D at very high ISO, so it's brighter than it would appear normally. There's another picture that was taken with exposure settings that represent better what this view would look like to the naked eye.

@das_robin

Whoa. I had no idea moonlight was this bright.

@hmallett @pfsmet

@argv_minus_one @hmallett @pfsmet Yeah, the moon is pretty reflective! And it was close to full moon as well, so perfect conditions. Think about how much you can see on a clear night under a full moon without artificial light