I found this other blog post talking about galaxies that I thought was interesting. Check it out.
The stars were always an interest in my youth, learning about their range in color indicating their surface temperature for instance, the coolest stars are red while the hottest stars are orange. The temps in various stars range from anywhere 3,000 to 40,000 Kelvins.
Stars also have different brightness to them. The way scientists can determine how bright a star is, is by color and size of the star. Blue stars shine brighter than cooler red stars which are of the same size while giant stars shine more brightly than little dwarf stars.The common elements which stars of made of are, hydrogen and helium gas. When you combine all the mass from these elements, it creates a gravitational field much stronger than earth’s which prevents the gas from dispersing out into space. Astronomers who embrace evolution, believe that stars randomly form from a collapsed nebula.
A nebula is an enormous…
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