Noctilucent clouds: catching the end of the season

I spotted this nice display of noctilucent clouds last night. I have blogged about these clouds before; as I noted then I don’t observe them seriously, but I do keep an eye out for them. This year it has taken me until nearly the end of the season to see any. People sometimes give theContinue reading Noctilucent clouds: catching the end of the season