Colorado witnesses world's largest firework

The skies over Steamboat Springs, Colorado in the United States bore witness to world's largest firework launched at the city's annual winter carnival. 

Weighing at over 1,270kg, roughly the weight of a Toyota Corolla, the firework was a little more than 5ft in diameter, reports CNN. 

Explosives propelled the shell out of the tube over 480kmph, and rose over a kilometre in the air before exploding after a team at Steamboat Fireworks launched the shell from a 26ft steel tube from a mountain that overlooks the festival. 

"We invested hundreds of hours into this project, and we anticipate that we will enjoy the satisfaction of this success for months to come," said Project Manager, and financier, Tim Borden, in a press release.

An official from Guinness World Records attended the launch and presented a certificate to Borden and his team of three other men: Ed MacArthur, Eric Krug, and Jim Widmann, according to the press release.

The former world record for the largest firework was set in the United Arab Emirates in 2018 with a 1,087kg shell.

Borden told CNN that his team has been working to break the record for seven years and spent thousands of hours building progressively larger fireworks.

The team tried to break the record last year, but the shell exploded too early.

"When you think of it on the physics level, to get a ton of anything up in the air with one explosion takes quite a bit of thinking," Borden said.

"People are already asking us, 'What's next?'" Borden said in a press release, "I really can't answer that question, other than to say, whatever it is, I hope to do it with this same bunch of guys."