![A supermoon was visible on August 1 and has made a rare second appearance this calendar month. (Dan Himbrechts/AAP PHOTOS) A supermoon was visible on August 1 and has made a rare second appearance this calendar month. (Dan Himbrechts/AAP PHOTOS)](/images/transform/v1/crop/frm/silverstone-feed-data/8494d771-073b-40d9-b070-530783522c8c.jpg/r0_0_800_600_w1200_h678_fmax.jpg)
If the moon looked a bit bigger and brighter than normal last night, that's because it was.
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A rare blue supermoon is on display for a second day on Thursday.
It will offer another chance to glimpse the phenomenon after overcast skies and storms blocked the view for some on Australia's east coast on Wednesday evening.
A supermoon occurs when a full moon is at its closest position to earth, or roughly 363,300km away.
A blue moon is when two full moons occur in one calender month, which takes place about 41 times each 100 years.
"If the second full moon is also a supermoon, we talk about a blue supermoon," Macquarie University astrophysics professor Richard de Grijs said.
The event will also be visible on Thursday, reaching its fullest point from around 11:30am, but being most visible when the sun is down.
Australian Associated Press