Today is marked in history by a very special event - as family and friends celebrate the birthday of Sarah Jane Marshall.
Born on Tuesday 18th March 1986, in the month that the Japanese Suisei probe flies by Halley's comet, during its sojourn through the inner solar system, to study its UV hydrogen corona and solar wind.
On the occasion of celebrating this special day, friends and family send their best wishes, "have a fantastic 50th birthday with many more to follow, from your good friends Cleo and Ken".