Norwegians have been left awestruck by what experts say was an unusually large meteor that illuminated the night sky in the country's south-east.
Footage shows powerful flashes of light over Norway, followed by what witnesses described as loud bangs on Sunday.
Norwegian police say they received a flurry of emergency calls but there were no reports of injuries or damage.
A team of experts are hunting for the meteor, which they believe landed in a forest near the capital, Oslo.
A meteor is a space rock that has burned up after entering Earth's atmosphere at high speed.
The Norwegian Meteor Network says Sunday's fireball was visible for at least five seconds after it appeared at about 01:00 local time (23:00 GMT).
Travelling at about 16.3km/s (nearly 36,500mph), the meteor could be seen over large parts of southern Scandinavia, the network says.
Norwegian astronomer Vegard Rekaa has told the BBC his wife was awake at the time. She could hear "shaking in the air" before an explosion she assumed was something heavy falling near the house.
Mr Rekaa woke up, he said, to "fantastic" videos of the meteor, which was "something very seldom seen" in Norway or anywhere in the world.
A team of experts have been sent to the area where the meteor is suspected to have landed, he added.
Initial research suggests the meteorite may have hit the ground in a wooded area called Finnemarka, about 60km (40 miles) west of Oslo.
One group of campers reported "a large explosion just above their heads", Mr Rekaa said.
A female camper told him of seeing the fireball from a short distance but thinking it was her friends playing a trick on her.
Analysis of the meteor suggests it could have weighed at least 10kg (22lb).
While not astonishingly large, the meteor was special because so many people either heard or saw it, Mr Rekaa said.
(Source: BBC website, headline composed by Newzroom, photo from Google)
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