Noctilucent cloud season looks to be under way again - and you can get a chance to see the phenomenon outside your very window at night.

Noctilucent (night shining) clouds, are Earth's highest clouds, occurring at altitudes of 80km above the planet, putting them right at the edge of space.

They form when water vapour crystalises around meteor smoke in the upper atmosphere.

A spokesperson for the Coats Observatory, based in Paisley, said: "Noctilucent clouds have a distinctive electric-blue coloured tendril form and can occasionally be seen from latitudes such as ours here in Paisley from late May until August.

"Sightings have been reported from northern Europe over the last couple of days so hopefully it won't be too long until we start seeing them here again.

"The best observing tip is to look west around 30 minutes after sunset.

"If there are luminous blue tendrils spreading across the sky then you have just spotted a formation."