The Northern Lights were visible in parts of the UK overnight - and may be seen once again on Tuesday.
The spectacular natural light display, known as the aurora borealis, was caused by a fast-moving coronal mass ejection (CME) that left the sun late on Saturday and was expected to reach Earth between late Monday and early Tuesday.
It was expected to enhance geomagnetic activity, allowing the aurora to be seen further south than usual, particularly in dark and clear skies, the Met Office said.
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On Monday night, stargazers reported sightings of the Northern Lights in northeast Scotland, northern England and the Midlands.
Some even reported seeing the aurora as far south as Dorset.
A Met Office spokesperson said: "With the arrival of this CME, the Met Of