Stars in the Universe

       Stars are largely made up of gas and plasma, so they are cosmic enegies that produce heat, light, ultraviolet rays, x-rays and other forms of radiation. We know some familiar stars that exist in the Universe, but nobody knows exactly how many stars exist. The number of stars would be staggering. Our universe likely contains more than 100 billion galaxies, and those galaxies may have more than 100 billion stars.
       Star's brightness is decided by how much energy they work and how far away from earth they are. Perhaps stars that we can see with our eye in the sky appear to be different color, because thier temperature is not all the same.
       Stars exist in many sizes ranging from dwaft, is pretty small, to super giant , is houndred times as large as the sun. Building pressure causes a rise of temperature in a nascent star, and when a developing young star's core temperature rise to about 27 million degrees Fahrenheit, nuclear fusion begins. Young stars in these stages are called protostars.Stars evolve over billions of years.
       As stars get close to the end of their lives, their hydrogen is converted to helium, is no smell and no colar, and helium sinks to the core of the star and raises the star's temperature, which cause expansion of the star's outlet layer, also the phrase is actually a prelude to becoming small. The body that become small gets cold for billion of years untill it goes dark or doesn't produce energy anymore.
       A few stars avoid these evolutionary processes. In this case, they explode as supernova. If the mass is more than two as large as the sun, it will be a black hole. While if the mass is less than two as large as the sun, it will be a neutron star, is an ultradense star at the end of the advance.
       This topic is really difficult to understand, so I read this article while searching for unknown words and the definition of specific words. There are so many mysteries in the universe. Though topics about the universe is complicated and hard to understand, I would like to learn more about it, because mysteries in the universe is astonishing and interesting. I think the univer can spread my imagination that works usefully not only in my daily life but also on my academic thoughts. This is what I am interested in now.


Vocab
Staggering
Part of speech: Adjective
Definition: Very surprising.
Synonym: Shocking
Sentence: Fredy earns a staggering amount of money for five years.

Eschew
Part of Speech: Verb
Definition: To prevent something from happening
Synonym: Avoid
Sentence: Most of adults who can drink alcohol eschew drinking too much, because it makes them unhealth and obesity.