People across the UK could be in with a chance of seeing the Northern Lights today and tomorrow following solar activity yesterday.
A fast, Earth-directed coronal mass ejection - a burst of solar plasma and magnetic fields - was launched from the sun early yesterday, Sky News weather presenter Joanna Robinson explained.
It is expected to reach Earth today, with
aurora sightings possible in the north of the UK tonight, although this could be obscured by cloud.
There's a slight chance of sightings across central England and Wales, too, where clearer skies are expected.
The Northern Lights may also be seen on Friday night, although more cloud and rain moving in from the southwest may limit any opportunity to see the aurora tomorrow.
The Met Office believes that various ejections from multiple solar flares may combine, before giving Earth a "glancing blow" on Friday.