Last night, which was overcast, I noticed a strange green glow in the sky to the North of Newbury, giving the cloud cover the appearance of a hazy green mist.

A relative could also see it from south Newbury when I alerted them.

Obviously not the moon, so I assumed it might be due to the green laser that Harwell sometimes points into the sky.

Out of curiousity, I called Harwell today, who tell me they haven't used the laser in the sky since June.

Any ideas?

It was possibly this:

http://wp.lancs.ac.uk/aurorawatchuk/2016/1...hat-is-airglow/

Thanks for that Jeff.

It had crossed my mind that it might be aurora borealis, but the glow seemed static and we are rather far south for that.

I have never heard of airglow, but it fits the description, though it must have been bright to have been visible through the hazy clouds.