The sun, a star that seems bigger and brighter since it is smaller than other stars. Through their distance of separation from Earth, stars vary greatly. A star's apparent light itself can't be used to measure its distance from Earth. It is possible to assign the apparent brightness of Sirius A to both its inherent luminosity, 20 times that of the Sun, and its proximity.
For its situation in the Canis Major constellation, the brightest star in sky is Sirius, also recognized as "Dog Star" or, more formally, Alpha Canis Majoris. Sirius is a binary star ruled by Sirius A, a luminous principal pattern star with an obvious magnitude of - 1.46.
As populations transition from rural to urban living, many social changes take place. For example, as people move to urban environments, they tend to live in closer proximity to each other. This presents problems when it comes to sanitation and hiegiene.
