The coronal streamers - which we normally do not see but will during the solar eclipse - become solar winds. I am wondering something. If we see the coronal streamers, are they not giving off light? And, since light can travel around corners to a certain extent, would that not mean they would light up at least a small part of the dark side of the moon? Just a rim of what we usually do not see on the dark side?
Of course, it may depend on what kind of light they are reflecting. Is it their own light? Or is it a light reflected from the sun to the streamers? Would that make a difference? I don't think so. The moon has no light of its own but we see it. So, that is reflected light it received from the sun.