Lunar eclipse is seen above Sydney, Australia, on May 26, 2021. (Xinhua/Bai Xuefei)

A blood moon is seen above the Sydney Opera House in Sydney, Australia, on May 26, 2021. (Xinhua/Bai Xuefei)

A blood moon is seen above the Sydney Opera House in Sydney, Australia, on May 26, 2021. (Xinhua/Bai Xuefei)

A blood moon is seen above the Sydney Opera House in Sydney, Australia, on May 26, 2021. (Xinhua/Bai Xuefei)