Astronomy stars and the heavenly bodies, they encompass are among the most interesting topics in modern science. Even people who do not have an interest in outer space travel may be interested in learning more about how these heavenly bodies are formed and move through space. The problem with most theories of stellar evolution is that they are not testable by observation. observational evidence tends to rule out some theories and give others a better chance of being true. This has made many scientists interested in testing theories and coming up with testable predictions about how stars came into existence.
Stars are believed to be very complex entities, consisting of a core mass of hydrogen held together by a few magnesium particles and other elements. The core of a star is composed of extremely hot metal and is therefore very heavy, but can collapse under its own weight in a very short time if it becomes very dense. Stars are also known to spin, with their spin being determined by the rotation of their inner surfaces. Because of this spinning, stars appear to move through space in a chaotic and random fashion, and without the benefit of gravity.
Astronomy stars can be found everywhere in our own galaxy. They are prevalent in the cluster NGC 6342, which is the nearest stellar body to our own sun. The other most common type of star in the universe is called the A-class dwarf. These low mass stars make up a third of the entire solar system. Many astronomers think that A-class dwarf stars are responsible for providing most of the energy for the universe.
Astronomy stars can also be found around other dead star systems. Many astronomers have identified low mass black holes around relatively young, unstable stars. The presence of a black hole can confirm a hypothesis, by indicating the existence of an outer space structure. The existence of such a black hole is enough evidence for many scientists to claim that there must be a planet beyond our solar system, though many astronomers dispute this claim.
Astronomy stars can also be found around very old stars that are not in a stable orbit around the parent star. The parent star may have accented a black hole during its formation, creating a hole in one side of the star’s orbit. When the gas or dust surrounding the dead star spirals into a close orbit around the star, it becomes very dark. This darkness is similar to what an astronaut might feel when orbiting Earth, only much smaller.
Astronomy is based on the stars’ properties as seen in the skies. It is used by many amateur astronomers to study the movement of celestial bodies and to study the effects of gravitational pull on stellar objects. The main goal of amateur astronomers is to detect planets around other stars, though this is not possible with the most powerful telescopes on the ground. Some amateur astronomers use very sensitive equipment that is available only at observatories such as Sky & Telescope Online.
Astronomy stars can be classified into two types: fixed and variable. A fixed star is one that follows a definite orbit around its parent star. For example, the asteroid belt between the planets Jupiter and Saturn is made up of many such systems. They all move around very similar ways. A variable star is one that is able to shift between different planes, and is left alone to follow its orbit around the star.
Astronomy stars provide us with an invaluable resource for studying the universe. We know so little about our own solar system that we rely heavily on the stars to produce constancy in our theories about the formation of the solar system and the universe in general. Astronomy books list hundreds of variable stars, and a vast array of other celestial bodies. It is impossible to study them all in one lifetime, but by using a star catalog to identify the brightest stars in a given system and to study their relationships to one another and to other known celestial objects, one can learn a great deal. The challenge is to find the right system of reference, and that can be difficult.
