Some of you may have noticed a blip in the comments moderation over the past 24 hours. I think all messages have now come through, but a software upgrade on my server is the culprit. Things seem to have gone back to normal now.
On an unrelated matter, I won’t be able to get off a post today or tomorrow. On Tuesday, I’ll have some interesting information about Breakthrough Starshot. [I had originally promised this for Monday, having forgotten about the US holiday].