STAR

LARGEST STAR

The largest star up to now is the M-class supergiant Betelgeuse, or Alpha

Orionis.It is the top left star in the constellation of orion, which is 301 light year away from the earth.It has a diameter of 700 million km, which is about 500 time greater than of the sun.

BRIGHTEST STAR

 

The brightest star as seen from the earth is sirius , known as the dog star, in the

constellation of canis major.It has the diameter of 149,598,020km & more than 24 times brighter then sun.The star Cygnu OB2 no.12, discover in 1992, is so far away that it cannot be seen from the earth. It may be the brightest star in the galaxy - up to six million times as bright as our sun.

It is the brightest star. It’s about 3-and-a-half times brighter than the Arcturus.This star twinkles & its color changes sometimes at first-time when it was observe it was report Sirius as a UFO. But slowly they came to know it was a star