An "extremely rare" meteor known as a daytime fireball has been blamed for a sonic boom-type noise heard across parts of England.
People in Dorset, Somerset, Devon and Jersey reported hearing a loud bang and seeing a streak of light in the sky on Saturday afternoon.
After analysing pictures and videos, experts confirmed they showed a meteor.
They have urged people to keep an eye out and report any fallen fragments of the space rock.
Simon Proud, a specialist in aviation meteorology at the University of Oxford, captured the meteor - which appeared as a bright flash - flying over the UK on a weather satellite.
Sometimes weather sats see unexpected things.— Simon Proud (@simon_sat) March 20, 2021
Do you see the flash in this video? That's a #meteor flying over the UK this afternoon!🌠
Spotted thanks to @willgater's excellent detective work! https://t.co/Ia7f39UJsh
Processed: @OxfordPhysics / @NCEOscience. pic.twitter.com/I7PSQBnQu5
Richard Kacerek, from the UK Meteor Observation Network of amateur astronomers, said only the brightest "bolide class" meteor could produce a rare "daytime fireball".
He added that the one seen on Saturday would have needed to be "very large" to be visible during day.
Dr Ashley King from the UK Fireball Alliance - a group of experts and enthusiasts who hunt for freshly-fallen meteorites - said the fireball "would have been going faster than the speed of sound".
"Normally when you hear that it's a good sign that you have got rocks that have made it to the surface. It's incredibly exciting and I'm a bit stunned," he said.
The group has asked people in the Devon, Dorset or Somerset areas to report finds of any fragments - believed to be small blackish stones, or a mound of dark dust.
Data from cameras is also being analysed to give details of the meteor's journey.
Speaking to BBC Radio Somerset, astronomer and science journalist Will Gater, who was among the first to link the sonic boom to a meteor, said: "If somehow the location can be pieced together who knows - the thought that something could be recovered is quite exciting."
Following the "huge bang", which people said shook their homes and windows, an earthquake was ruled out by The British Geological Survey.
The Ministry of Defence also said the "massive bang" was not linked to any RAF aircraft.
A campsite near Weymouth captured the loud noise on a security camera.
We heard it at East Fleet Touring Park in Weymouth. Sounded much louder in real life than on the clip. pic.twitter.com/mxjwI6Do6E— East Fleet Touring Park (@EastFleetFarm) March 20, 2021
In February a meteor flying across the sky at night was caught on lots of doorbell cameras across the UK.
Several rocky fragments were recovered from the fireball - they came down in the Winchcombe area of Gloucestershire.
Because it happened at night cameras were able to record the rock coming through the atmosphere creating a huge fireball in the process.