What are some lesser known facts about blue giant stars?

Firstly, the following text comes from here 10 Interesting Facts about Blue Giant Stars. Give them a look and help them by sharing their work. Since there is no clear definition of blue giant stars, the term is frequently applied to any hot, massi... read more

While blue giant stars have a surface temperature of at least 10,000 Kelvin, compared to say a yellow dwarf star like our Sun at about 6,000K, another type of star called blue supergiants (class I) are even more extreme, with a surface temperature of between 10,000–50,000K and luminosities of 10,000 to a million times brighter than the Sun. read more

The pole star today will definitely not be the pole star around 5000 years from now and was not the pole star about 5000 years back. Earth’s axis maintains a tilt that varies from about 22 degrees to 24 degrees from perpendicular every 41,000 years, with respect to the plane of our orbit around the sun. read more

The term applies to a variety of stars in different phases of development, all evolved stars that have moved from the main sequence but have little else in common, so blue giant simply refers to stars in a particular region of the HR diagram rather than a specific type of star. read more