Stellar Astronomy

starThe stars you see at night might not look like much, but they are actually distant suns that vary in sizes. They are very hot and mainly made up of hydrogen. How they come into existence is that dense regions within molecular clouds of gas and dust in outer space collapse, thus forming the star. The life of a star pretty much depends on its mass – the lower a star’s mass, the longer it will burn so if a star is large it will burn it’s fuel (hydrogen) faster because it produces more energy.

What is the difference between the sun and the stars?

To understand the stars properly you need to know more about the sun. the stars are smaller in size and they also have lower temperatures compared to that of the sun. They cannot give too much heat like the sun and they are therefore redder but cooler. However when combined, they are hotter and have high pressures than the sun.

Types of stars

There are a few stars called Blue Giants and they are much larger and warmer than our sun and they incessantly shine up to a million times our sun’s brightness. One of the most great stars in the universe, but harder to detect is a Brown Dwarf. A Brown Dwarf is also known as a failed star, or a protostar, because the core temperature and pressure is not high enough for thermonuclear reactions to begin, although they have an initial burst of nuclear activity, it promptly extinguishes itself by pushing the inner layers outward and thus making the core less dense.

A T Tauri Star is a star that evolved past protostar and is in the process of becoming a main sequence star. A Main Sequence Star makes up the majority of the stars in our universe. They vary in size and brightness, and all are releasing tons of energy by converting hydrogen into helium. Other types of stars include the Red Giant, White Dwarf, Red Dwarf Star, and Neutron Stars. And the biggest, but having the shortest life spans, are the Supergiant Stars.