The Pleiades is an open star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology. The Pleiades is a white star cluster that is roughly 500 light years from Earth.
Blue Blood Origin. The term blue blood originated in Spain. It was used to differentiate between people with light skin from those with darker complexions. The veins of southern Europeans appeared more blue due to their pale and translucent skin. Wealthy landowners or their descendents were part of an upper class in Spain that were called blue-bloods or blue-blooded.
blue blood. 1. Fig. the blood [heredity] of a noble family; aristocratic ancestry. The earl refuses to allow anyone who is not of blue blood to marry his son. Although Mary's family is poor, she has blue blood in her veins.