Energy Star

leading to the formation of the elements. The universe is about 14 billion years old and consists of many clusters that has approximately 400 billion stars. In fact, the Earth and everything around us are made by stars (Hawking). The Big Bang Theory is used to tell how the universe and earth was created. The universe started with a small-hot ball of energy, it went from a small atom to expanding across space within seconds. As the universe began to cool, it eventually began to create

scale and more about an alternate measurement astronomers use to designate the luminosity and apparent brightness of stars. When the Greek scientist Hipparcos determined the brightness of stars he did it by eye. The first stars that came out at night were the first importance and today we call those stars “first magnitude”. After the year’s astronomers start realizing how some stars are brighter than others and that's when they form a magnitude scale. Magnitudes and brightness are related to each

Stars will outlive the average human beings by about ten billion years. But stars, just like humans, go through a life cycle that adjusts to many different paths. A star is a spherical brilliant object that lies somewhere in the galaxy. The closest star to Earth is the sun. The sun is a form of heat and light that Earth receives every day. Humans need this Heat and light to survive, that is why stars are so important to the life of humans. Stars start out as nebulae and continue to form, depending

About 4.6 billion years ago a nebula, a giant interstellar cloud of dust and gas (a composition: 75% of the mass in the form of hydrogen, 25% as helium, and all other elements comprising only 2% of the total.) resulted of a passing star, or shock waves from a supernova caused a gravitational collapse at the center of the cloud.This collapse, caused pockets of dust and gas began to collect into thick regions. As the thick regions pulled in more and more matter, conservation of momentum caused it

observe the stars more efficiently, it is discovered that stars goes through their own cycle of life, starting from birth to death. Before a star is born, massive clouds of dust and gas are pulled together by gravity in space, called a stellar nebula. These massive clouds are pulled to the center of the collapse into a number of points, or course within them. In the middle of the core, several events

Life Cycle of a Star A star is born in a high-density nebula and condenses into gas and dust and contracts under its own gravity. Next, a region of condensing matter will begin to heat up and star to glow, forming protostars. The temperature at this point is 5 million degrees centigrade. When this temperature is reached, hydrogen fuses and forms helium. A star then begins to release energy which causes it to contract and shine. After millions of years, the core of the star which is helium, contracts

into a hot center,and it will happen over and over again,and when it gets to the hot center it eventually becomes a star. Red Super Giant: A Red Supergiant is aning giant star that has consumed its core’s supply of hydrogen fuel.Helium has something in its core. Hydrogen is a undergoing nuclear fusion in other shells. Shells expand.The phases are diverse

Our Diverse Stars When we think of stars, we often think that they are all the same. We often think that they are all just big balls of gas burning up to billions of light years away. However, that isn't exactly true. The truth is that stars are very diverse. Just like anything else in our Universe, stars fall into many different classifications based on its defining characteristics. In this essay I will discuss several different types of stars. First, I will discuss protostars.

When you are outside during night time and look up, you see thousands of stars of sizes, and color. Sometimes if you are lucky you get to see planets that also glow brightly such as Mars, Jupiter, Saturn, and so on. But there is one thing that is hidden from the naked eye and can make any of the things I mentioned, disappear. That thing is called a black hole. I am studying black holes because I want to find out how they affect us now and in the future, in order to help my reader understand I will

own gravity. This is when a star begins to form. The cloud begins to form into a rotating disk, with the inner section rotating faster than the outer. The center will begin to heat up because of the pressure and thermonuclear reactions start in its center. Eventually, two hydrogen atoms get squeezed together with extreme pressure so that they fuse into one atom of helium, releasing a massive amount of energy, when this happens; the object is now a protostar. As the star ages, it begins to run out