For the first time since 2012, there will be a rare 'blue moon' tonight - popularly known as a time when we are treated to two full moons in a calendar month (as opposed to normal one full moon).
Chairman of the Astronomical Society of South Africa, Jerome Jooste says that the moon will not, in fact, turn blue. He says that the Blue Moon refers to a particular moon of the month (second moon in a month) - not the colour. Jooste believed that it was first mentioned by a Roman clergy in the 1500s - this is seen to be the popular reference to a 'blue moon'.
Jooste says that it is also possible that the moon may seem blue due to the ash, smoke and dust in the atmosphere.
Camilla Bath (standing in for Stephen Grootes) spoke to Chairman of the Astronomical Society of South Africa, Jerome Jooste, who explains this phenomenon in greater detail.
Listen to the conversation below: