The fireball that fell over Western Australia illuminated the night sky and attracted many onlookers.
Camera captures fireball in Western Australia. Video : 9news
Dashcams and numerous observatories in Western Australia captured images of a burning green-blue fireball streaking across the sky on November 22nd, at approximately 8:50 PM local time. According to the Perth Observatory, many residents witnessed the fireball falling in southwestern Western Australia.
These types of fireballs are usually caused by meteorites and are larger than average. They are also known as bolides, accompanied by blinding flashes of light due to the immense heat generated from friction with the atmosphere. The green color of the fireball may result from the iron in the meteorite.
Some locals speculated that the meteorite could be a large object in the Leonid meteor shower, which peaked on November 24th. The Leonid meteor shower is an annual meteor shower that occurs when Earth passes through ice and rocks left over from a comet orbiting the Sun in its 33-year orbit. According to Samantha Rolfe, an assistant lecturer at the University of Hertfordshire, England, the Leonid is one of the more frequent and predictable meteor showers of the year. The dust cloud that Earth passes through forms as the Temple-Tuttle comet heats up in the inner reaches of the solar system, releasing gas that propels small rocky particles.
Because Earth moves across the section of its orbit that intersects with the dust trail of the Temple-Tuttle comet, rocks and ice fall through the planet's atmosphere, Rolfe explains. They are usually as small as grains of sand and become meteoroids when they interact with Earth's atmosphere. They vaporize and create flashes of light lasting about a second, called shooting stars.
However, it's possible the meteor that fell in Western Australia was simply a stray object unrelated to the Leonid meteor shower. Curtin University's desert fireball network is trying to pinpoint the impact site, using its trajectory across the sky. If the original rock was quite large, more than 50-100 meters long, it likely maintained much of its speed and survived its journey through the atmosphere, according to Annemarie E. Pickersgill, a meteor impact scientist at the University of Glasgow, Scotland.
An Khang (According to Newsweek )
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