how was this bright star formed?
It formed approximately 4.6 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud.
Sun
 It formed approximately 4.6 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud. Most of this matter gathered in the center, whereas the rest flattened into an orbiting disk that became the Solar System. The central mass became so hot and dense that it eventually initiated nuclear fusion in its core. It is thought that almost all stars form by this process.

cma (canis majoris) is so bright it is visible near the rising sun but is better known as Canis Major is a constellation which contains Sirius, the brightest star in the night sky how did this bright star gets its name? Its name is derived from the Greek word "Seirios" "glowing" or "scorching". can you name a few more bright stars? Sun, Spica etc can the former be viewed by the naked eye? The brightness of the Sun can cause pain from looking at it with the naked eye; however, doing so for brief periods is not hazardous for normal non-dilated eyes
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Sun [SEP] Introduction
In its core the Sun currently fuses about 600 million tons of hydrogen into helium every second, converting 4 million tons of matter into energy every second as a result. This energy, which can take between 10,000 and 170,000 years to escape the core, is the source of the Sun's light and heat. When hydrogen fusion in its core has diminished to the point at which the Sun is no longer in hydrostatic equilibrium, its core will undergo a marked increase in density and temperature while its outer layers expand, eventually transforming the Sun into a red giant. It is calculated that the Sun will become sufficiently large to engulf the current orbits of Mercury and Venus, and render Earth uninhabitable – but not for about five billion years.