Is it true that Venus has its own form of rainbow? © ESA/MPS

Is it true that Venus has its own form of rainbow?

Venus has a 'glory' rather than a rainbow. But hey: you say potato...

Asked by: Damion Ries, Reno, USA

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Venus has an optical phenomenon called a ‘glory’ which – like a rainbow – forms when sunlight falls on cloud droplets. However, glories are caused by the interference of light waves within droplets, whereas rainbows are caused by the reflection, refraction and dispersion of light.

Unlike the broad arc of a rainbow, a glory is typically seen as a series of coloured concentric rings. In 2011, a Venusian glory was observed by ESA’s Venus Express probe, probably caused by sunlight interacting with the sulphuric acid/ferric chloride droplets in the planet’s atmosphere.

Could climate change turn Earth into Venus? © Getty Images

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