Perseus and Andromeda (Leighton) daughters of Poseidon, the god of the sea. When the nymphs became aware of her claims, they protested to their father, who retaliated by calling up a sea monster called Cetus to patrol and wreak havoc along the coastline of Ethiopia placing Cassiope's kingdom at risk. In response the Queen, together with her husband Cepheus, decided to sacrifice her daughter, Princess Andromeda, to the monster. Andromeda was chained to a rock at the edge of the sea as an offering to the monster. Perseus was travelling back home on his winged horse, Pegasus, after battling with Medusa. He rescued Andromeda
Bert van Sprang in February 1976. The main-belt asteroid 3098 van Sprang was named after him. Bert van Sprang Bernardus Wilhelmus Maria "Bert" van Sprang (20 June 1944 in Tilburg – 17 November 2015 in Pijnacker) was the founder of the Dutch youth division ("JWG", or "Jongerenwerkgroep") of the Dutch association of meteorology and astronomy ("NVWS", or "Nederlandse Vereniging voor Weer- en Sterrenkunde") in 1967. Activities carried out by Van Sprang for the JWG included the organization of astro camps, the setting up of a program to build telescopes cheaply, and the writing of many booklets on astronomy topics. He was also program