B-type stars are hotter and bigger than our sun, with temperature of 10,000 kelvin to 30,000 kelvin, the main sequence stars size is about 2.7 to 10 times of our Sun. The B type stars lacks convection zone like with cause corona in outer atmosphere of star, main sequence stars generate energy from CNO cycle of thermonuclear fusion of hydrogen in their core.<br />#starsizecomparison #Btype<br />...<br /><a href="https://www.youtube.com/watch?v=t9I_-ugR-IQ" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=t9I_-ugR-IQ</a>