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Origin of fireball spotted falling across UK discovered

Origin of fireball spotted falling across UK last night discovered
Credit: AI-generated image (disclaimer)

An orange-sized space rock which blazed across the skies January 9 probably didn't make it to Earth.

Researchers believe that the rock, which originated in the outer asteroid belt, burned up before it could hit the ground.

A spotted falling across northern Europe on Monday burnt up as a fireball in the atmosphere, researchers believe.

Observers across England, Wales and the Netherlands saw a shooting star blazing across the sky last night as the rock traveled through Earth's atmosphere. Footage captured on dashboard cameras, video doorbells, mobile phones, and dedicated networks was subsequently analyzed to find out more about the fireball.

Following analysis by the UK Meteor Network (UKMON), researchers believe that the rock simply wasn't large enough to make it to the ground, so it can't be called a meteorite.

Dr. Ashley King, an expert on meteorites at the Museum and member of the UK Fireball Alliance (UKFAII), says, "The fragment came from somewhere in the outer asteroid belt, and hit Earth's atmosphere at around 10 kilometers per second which is quite slow for these rocks."

"This would normally be favorable for it to fall to Earth. However, as the rock was quite small, being around the size of an orange and weighing less than 100 grams, we think that none of the material survived its journey through the atmosphere and so it is very unlikely that any of it made it to the ground."

This fireball comes almost two years after the Winchcombe meteorite fell in the eponymous Gloucestershire town. The majority of the Winchcombe meteorite, as well as the driveway it fell on, is now a part of the Museum's collections where it is improving our understanding of the early solar system.

The timeline of the fireball

Having been ejected from the , the meteorite would have traveled hundreds of millions of kilometers before coming into the vicinity of Earth.

At around 20.00 GMT on January 9, it was spotted falling in the U.K. It was recorded falling on many of the UKFAII's cameras, as well as countless dashboard cameras and video doorbells.

This suggests that it passed over Oxford and west of Milton Keynes, continuing towards Northampton where the was extinguished at an altitude of around 35 km.

"Had it been large enough, it probably would have landed somewhere in the Midlands, but unfortunately we don't think anything made it to the ground this time."

While researchers are disappointed that the rock did not fall to Earth, they are pleased by how rapidly they were able to respond.

"We should get two to three small meteorite falls in the U.K. each year, and now we have a huge network of cameras we're seeing more and more of them," Ashley explains. "This is a change from, say, 20 years ago, where maybe only a few people would have recorded them."

"The proliferation of cameras and makes it more likely we can quickly find meteorites which do make it to the ground in the U.K. After the Winchcombe , the public are also more aware of these events, so we have a better chance to find meteorites now than we ever have before."

This story is republished courtesy of Natural History Museum. Read the original story here

Citation: Origin of fireball spotted falling across UK discovered (2023, January 11) retrieved 18 April 2024 from https://phys.org/news/2023-01-fireball-falling-uk.html
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