September promises to be a thrilling month for astronomy enthusiasts as a blood moon total lunar eclipse is set to occur on Sunday, September 7. Those of us in the UK and western Europe might catch a glimpse of totality as the Moon rises, though we won't witness the complete spectacle.

This will mark the longest total eclipse since 2022 and is sure to feature prominently in every space enthusiast's diary. When describing what constitutes a total lunar eclipse , NASA explains: "The Moon moves into the inner part of Earth's shadow, or the umbra. Some of the sunlight passing through Earth's atmosphere reaches the Moon's surface, lighting it dimly."

They add: "Colours with shorter wavelengths ― the blues and violets ― scatter more easily than colours with longer wavelengths, like red and

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