- Species (plato.standford.edu)
What are biological species? At first glance, this seems like an easy question to answer. Homo sapiens is a species, and so is Canis familiaris. Many species can be easily distinguished. When we turn to the scientific literature on species, the nature of species becomes much less clear. Biologists offer over twenty definitions of the term ‘species’ (Hey 2001). These definitions are not fringe accounts of species but prominent definitions in the biological literature. Philosophers also disagree on the nature of species. Their primary concern is the ontological status of species. Some philosophers believe that species are natural kinds. Others maintain that species are particulars or individuals.
- Aquarius (constellation) (Wikipedia)
Aquarius is an equatorial constellation of the zodiac, between Capricornus and Pisces. Its name is Latin for “water-carrier” or “cup-carrier”, and its old astronomical symbol is (♒︎), a representation of water. Aquarius is one of the oldest of the recognized constellations along the zodiac (the Sun’s apparent path). It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.