As many people slept, the perfectly-clear sky was set ablaze when a large meteor flew through the sky.

Reports were received from Canadian to Ballan of the meteor on Tuesday night at around 11.15pm, with other meteor activity seen over Castlemaine and Stawell.

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Judith Bailey, the manager of the Ballarat Municipal Observatory and Museum, said when a meteor was brighter than the planet Venus, it was considered a fireball.

She said as recent meteor showers were not longer at their brightest, like the Eta Aquariid visible in early May, it may have been an isolated incident.

"It could easily be a sporadic meteor, and not related to a meteor shower, just one rock which the earth has intercepted in its orbit around the sun," she said.

"It was very spectacular. It definitely pays to keep your eyes open."

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Ballarat Fire Station senior station officer Jarrod Howlett confirmed the CFA had received multiple reports of a fire ball across the sky, but firefighters in Victoria had not had to attend any spot fires as a result.

"There was reports across the state of the meteor," he said.

"It's the usual thing of people seeing something strange that they don't usually, and calling Triple 0 because they don't know what to do."

There have been many online reports of the meteor being visible throughout hundreds of kilometres, however it seems to be concentrated in western Victoria and South Australia.

It follows the impressive Eta Aquariid meteor shower, which could been viewed over early morning Ballarat skies on May 7.

The meteor shower was the result of bits of rock and ice debris from Halley's Comet burning up in Earth's atmosphere.

Australian National University astronomer Dr Brad Tucker said at the time it was one of the "best meteor showers in the Southern Hemisphere this year".

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