A fireball lit up the sky on Thursday night, with reports of a "massive shooting star” flooding in from Victoria and New South Wales.
Callers to talkback radio stations reported seeing a bright object travelling east to north about 9.45pm. Some callers said they initially thought it was a burning plane.
Radio station 3AW listener John said he pulled over while driving in Keilor Park to watch the light show.
“It was really impressive,” he said. “It had the flame and the intense burn. Just as it was falling away it broke up. I’d say it was a little asteroid or a comet.”
Professor Brian Schmidt, an astronomer at the Research School of Astronomy and Astrophysics at the Australian National University, told excited Twitter users the fireball was likely space junk, pointing to a 'decay prediction' map he had sourced.
The junk may have started to break up above Sydney before ending in a 'bang' above Cobar, in western NSW, he said.
There were also reports it was visible in Tasmania and even South Australia.
A listener from Macleod said: “It was so fast and then it just slowed and drifted down ... with an enormous trail of light. You could see as it was coming down close to the ground it seemed to be splutter and breaking up. It was absolutely fantastic.”
Listener Gabbie told the station she saw what looked like a “massive shooting star” from her backyard.
The Bureau of Meteorology, which received a report of the light show from Bendigo, 160km north of Melbourne, just before 10pm, said it could be a meteor or a piece of space junk.
“I don’t know if anything was expected to re-enter the atmosphere tonight,” senior forecaster Terry Ryan said.
“Obviously something has happened. Maybe it’s a bit of space junk or it could be a meteor. It was described as fairly bright.”
The Astronomical Society of Victoria said the object could be a meteorite, or it may be a satellite or parts of a satellite reentering the earth’s atmosphere.
President Ken Le Marquand said he received a call from a man at the Queen Victoria Market just before 10pm who reported seeing a meteor going from “horizon to horizon”.
“He said it didn't get quite as bright as the moon and was mostly white with a bit of red at the end," Mr Le Marquand said.
"He said it went for 30 seconds, which is an awful long time. Usually the ones we see in the sky are the size of dust and only last a second. But if you get something a bit bigger, like the size of a pea, it can put on a spectacular light show.”
Peter Gibson, of the Civil Aviation Safety Authority, said he had received reports from people in Sydney who said they saw a meteor.
Mr Gibson said there had been no reports of aircraft problems.
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