When you look into the night sky, sometimes you see small specks of light. Those tiny specks of light are actually giant exploding spheres of hydrogen and helium called stars. Many people know about stars but don't know the many interesting behind them.
1.The most common type of star is a red dwarf.
75% of stars in the Milky Way are red dwarfs. Out of the sixty stars that are closest to the sun, fifty are red dwarfs. Red dwarfs can extend their lifespan to over 100 billion years since they burn very slowly. These stars are cooler, therefore they shine less than others. Not a single red dwarf star is visible with the human eye because of their low brightness. Unlike giant stars, small red dwarfs don't explode. As they age, they get
During this lab we utilized the HR Diagram Explorer to complete the experiments in our lab. We adjusted the different temperatures (x-axis) and luminosity (y-axis) and were able to see the stars plot on the diagram. This diagram shows the different categories of stars; Supergiants, Main Sequence, Dwarfs and the many others. The stars that where mostly plotted in the middle are the Main Sequence stars. These star make
They’re carbon stars, a unique type of variable star, which accumulate soot in their upper atmosphere that scatters light near the blue end of the spectrum. What’s left for us to view is the red component of a star’s light. As the carbon particles build up, the star fades in brightness and gets even redder. Eventually, the carbon absorbs enough radiation to escape the star, and the cycle starts over again.
Stars are born and reborn from an explosion of a previous star. The particles and helium are brought together the same way the last star was born. Throughout the life of a star, it manages to avoid collapsing. The gravitational pull from the core of the star has to equal the gravitational pull of the gasses, which form a type of orbit. When this equality is broken, the star can go into several different stages. Some stars that are at least thirty times larger than our sun can form black holes and other kinds of stars.
A white dwarf uses electron degeneracy pressure to support itself. It is because of the electron degeneracy pressure that white dwarfs have a small size relative to other types of stars.
One may look at the sky see the sun, stars, or even planets, but once you look through a telescope you would see more than the naked eye can uncover. For instance, Binary star is a star system consisting of two stars orbiting around their common bay center. The binary systems are made of two, four, or even more stars that are called the many star systems. These systems would often be independent for the eye as a single point of light, which can be revealed as a double or even more.
The Sun is a huge, bright sphere that is mostly made up of gas that is about 5 billion years old. The Sun is the closest to the Earth, it is 145 million km distant (this distance is called an Astronomical Unit). The next closest star is 300,000 times further away. There are probably millions of similar stars in the Milky Way galaxy (and even more galaxies in the Universe), but the Sun is the most important to us because it supports life on Earth.
All galaxies contain star clusters. A star cluster is a group of stars held together by gravity. Open star clusters are collections of six to thousands of usually young stars. Globular clusters are ball-shaped collections of thousands to millions of very old stars. Galaxies are collections of millions to hundreds of billions of stars, planets, gas, and dust, measuring up to one hundred thousand ly across. They came in different shapes and sizes and are spread across the Universe. In the 1920’s, astronomer Edwin Hubble changed the way in which scientists view the Universe. The four types of galaxies that are categorized by shape are elliptical, spiral, lenticular, and irregular. Elliptical galaxy is a large group of stars that together make
There so little that we know of the stars which are in the heavens which have their own story to tell. The Bible declares the heavens declare the glory of G-d. Jacob had train his children to read the signs in the heavens. Benjamin when asked by Joseph to look at the map of the stars pertaining to Egypt, Benjamin was well able to know that his brother Joseph was sitting right next to him.
Sirius also called the Dog Star or Sirius A is the brightest star in Earth's night sky. The name signifies "shining" in Greek. With a visual greatness of - 1.46, the star is outshone just by a few planets and additionally the International Space Station.2
The star Mintaka is a super-giant star that is 1,000 light- years away. The star is also 10,000 times brighter than our son. With it being the westernmost star of the belt, it is 60,000 degrees Celsius. The star Alnilam, the middle star, is also a super- giant. As close as it seems, it is actually 1,000 light years away from Earth.
A star begins as nothing more than a very light distribution of interstellar gases and dust particles over a distance of a few dozen lightyears. Although there is extremely low pressure existing between stars, this distribution of gas exists instead of a true vacuum. If the density of gas becomes larger than .1 particles per cubic centimeter, the interstellar gas grows unstable. Any small deviation in density, and because it is impossible to have a perfectly even distribution in these clouds this is something that will naturally occur, and the area begins to contract. This happens because between about .1 and 1 particles per cubic centimeter, pressure gains an inverse relationship with density. This causes internal pressure to decrease with increasing density, which because of the higher external pressure, causes the density to continue to increase. This causes the gas in the interstellar medium to spontaneously collect into denser clouds. The denser clouds will contain molecular hydrogen (H2) and interstellar dust particles including carbon compounds, silicates, and small impure ice crystals. Also, within these clouds, there are 2 types of zones. There are H I zones, which contain neutral hydrogen and often have a temperature around 100 Kelvin (K), and there are H II zones, which contain ionized hydrogen and have a temperature around 10,000 K. The ionized hydrogen absorbs ultraviolet light from it’s environment and retransmits it as visible and infrared light. These clouds, visible to the human eye, have been named nebulae. The density in these nebulae is usually about 10 atoms per cubic centimeter. In brighter nebulae, there exists densities of up to several thousand atoms per cubic centimete...
There's a snail on Pluto! No really! The scientific world feels like it's stuck in the middle of a cyclone, and I am in the very center. For many months after they first saw the satellite pictures, scientists all around the world just sat and stared and wondered. No one did anything. They couldn't find it in themselves to do something about this scientific phenomenon. Finally a Mr. William Bright decided that something needed to be done. He got managed to join scientists all over the world to come up with a solution. They decided to send me to Pluto. Me! Finnaly going into space to learn about something that might change the world forever. When Mr. Bright first asked me if I would go I was dumbfounded. How in the world was I a lowly scientist, who was barely out of Grad School, was going to learn about something that baffled the entire world! Of course I said yes. How could I not. So on January 4 2018
The red stars, or the older stars, in our galaxy are located in the bulge component, which is the center of our galaxy. These Population II stars are thought to be 10 billion years old. The bulge component also contains the globular star clusters. It is estimated that our galaxy has about 200 globulars, but we know about 150. These globular clusters are consolidated toward the Galactic Center. Harlow Shapley concluded that the center of the Milky Way lies at a cpnsiderable distance in the direction of Sagittarius.
Supernovas are extremely powerful explosions of radiation. A supernova can give off as much energy as a Sun can within its whole life. A star will release most of its material when it undergoes this type of explosion. The explosion of a supernova can also help in creating new stars.
The basic idea of star formation is gravitational collapse – the contraction of a region of gas under the influence of gravity. This is a simple process that would be expected to occur in any region of material dense enough for collisions between atoms to radiate away energy. However, the gas must be dense enough for collisions to occur and the temperature must be low enough for the atomic velocities not to be able to escape the system's gravity, so star formation only occurs in a few areas.