Energy Star

the ingredients for stars laid dormant for millions, perhaps billions of years until an event disturbed them ("Star birth", 2013). As Isaac Newton states in his first law of motion, “An object will stay at rest or travel at a constant velocity until acted on by a force,” and the same remains true even at the massive scales of the Universe. These clouds of gas and dust can be billions of miles across (Chinn, 2010b), and as such, require significant events to occur to displace them. The movements of galaxies and shock waves from supernova explosions are examples of events that can cause the gas and dust clouds to be…

plots a star’s spectral type respective to their absolute magnitude, which is the observational Hertzsprung-Russel Diagram, or the temperature of stars relative to its luminosity, the theoretical H-R diagram. Stars have specific evolutionary stages based on their initial mass, dictating its internal structure and means of energy production. The phases in stellar evolution correspond to alterations in luminosity and temperature. There are three main regions present on the diagram, the most…

there temperature. They plotted these data on graphs and discovered that many patterns emerged linking the mass of a star to its lifespan. From the noted trends and correlations they formed what is now known as the Hertzsprung Russell Diagram or commonly referred to as the HR Diagram. The HR Diagram is used as an important tool in the study of astrophysics. Specifically it is a graphical tool that Hertzsprung and Russell formed for astronomers to use to measure the different characteristics of a…

Remains of a Dead Star Throughout the history of Earth, multicellular organisms rely on one thing, the sun. And throughout the observable universe, there are million of stars out there just like our sun. These stars could be different however, with either more mass, volume, heat, etc. In our high school career, we learn a lot about astronomy, such as the order of the planets in our solar system. We also learn about gravity, rotation of planets, and how long it takes for light to travel.…

Stars are an appealing component of our universe. Because of our scientific advances, we know more about stars than ever before. They are born, they live, and then they die. How does this process work, though? The answer lies within thermodynamics. Thermodynamics has helped us understand how stars transfer energy and heat. Thermodynamics is a subject of physics that is concerned with heat and temperature. It is used to describe bodies of matter and their internal energy. Thermodynamics helps us…

When a star is born it can take one of two paths. It can either take the path of a high mass star or the path of a low mass star. A high mass star will be between 10-50 solar mass and a low mass star will be between .8-10 solar masses. One solar mass is equal to M⊙ = (1.989±0.004) x 1030 kg, which is A LOT. Either path it takes, the one of a high mass or low mass star it will live about 90% of it’s lifetime in its main sequence. Once achieving nuclear fusion the star slowly contracts over…

A Stars lifecycle can span from millions to trillions of years depending on the size of the star. Starting from a cloud of gas and dust then transforming into something that we on earth see every day as our own Sun then finally collapsing upon itself and eventually dying. Stars have been a major part of the development of life on Earth and will continue to dictate how we live our lives. Without these enormous balls of gas and energy life as we know it would cease to exist. This is regrettably…

patterns and properties of stars based on plotting them by their temperature on the surface and their light they emit, or luminosity. Created in 1912, the HR diagram was made by two astronomers, Ejnar Hertzsprung and Henry Russell who found patterns with stars’ properties. The Hertzsprung-Russell Diagram shows how every star goes through different evolutionary stages. These evolutionary stages are based on the internal structure of the star and how the star produces energy. On the graph, the…

A star is known as “a fixed luminous point in the night sky that is a large, remote incandescent body like the sun” (Oxford Dictionary). The life cycle of a star is a very complex and magnificent process. Every star starts out as a nebula and have their own physical features. They all evolve and turn into something beautiful. Every star's physical features vary. Their diameters can range from 450 times smaller to 1,000 times larger than the sun. Temperatures expand from 3,000 degrees Celsius to…

known as stars. Stars are one of the most popular astronomical objects and represents the building blocks of galaxies. A star is defined as a vast ball of gas held together by its own gravity. The nearest star to earth is the Sun. Similar to a living organism, stars have a life cycle in which they are born, they develop and grow, and eventually die. Stars begin as a vast cloud interstellar dust (mostly carbon or silicon) and hydrogen gas floating around in space. This gas can be floating for…