Simulations have now been used extensively in astronomy and planetary science to understand very complex astronomical processes. They are used as tools to study the very first stages of galaxy formation, the birth of large-galaxy clusters, the evolution of the Milky Way, and the nature of the universe in general. They have been used to test the predictions of general relativity and to test the stability of the universe. Many exciting cosmological scenarios have also been tested using numerical simulation.
Cosmologists have used many different techniques to solve the question ‘how do stars form within a galaxy?’
Simulation of stellar evolution has therefore played an important role in trying to put a theoretical framework on the evolution of the universe. It is now possible to simulate the evolution of galaxy clusters and individual galaxies within well-established physical frameworks with very accurate physical properties and accurate constants. It has also allowed astronomers to study the effects of galaxy formation on the total amount of dark matter in the universe.
Galaxy formation simulations can be used to study the evolution of the first generation of stars within clusters.
By studying how stars are born and evolving it is possible to learn about the very first stages of galaxy formation. This also helps us to construe the relationship between the early stars and the galaxies. Through this research we can learn more about the properties of matter that makes up stars. Apart from studying the stars, the study of their evolution and the development of elliptical clusters can be effectively carried out. It can give us valuable observational data which will be essential in interpreting the results of specific studies.
Galaxy evolution can be studied via observational techniques, like the study of stellar formation galaxies. Astronomy has proven to be a fascinating field. It gives us a chance to observe the workings of the entire universe in its most simple terms. It is also a great way of testing theories of cosmology. In fact, theories of cosmology form the basis of modern-day astronomy.
Stellar studies of galaxy formation show that the first generation of stars existed in extremely cold and very dense environments.
This was unlike the gas-rich environment of the quiescent (pre-galaxy) phase of the universe. Super Massive Black holes (SMBH) are also believed to be responsible for the early phase of galaxy formation. The present-day Sagittarius and Aquarius (gulfs of stars close to the Earth’s plane) could not have formed if it had been inhospitable to rocky material. Hence, these two large space objects are testaments of the stellar history of our planet.
Modern cosmology postulates that each of the hundred billion light-years of space must have had a stable system of gravity and was relatively homogenous.
The Milky Way is the most common cluster in the entire sky. Over the last several decades, sophisticated instruments such as the Spitzer Space telescope and others, with the aid of infrared techniques, have been used to study the structure of these huge volumes of space matter. Scientists have shown that although most of the galaxies are made of a predominantly neutral gas, there are some which are rich in a variety of elements.
Galaxy formation is a well studied subject because of the many theories that can explain it.
These models also allow for time evolution and the evolution of the clusters themselves. The existence of black holes has also been explained by various theories of galaxy formation. Many of the simulations of galaxy evolution show a trend towards decreasing size of the cluster over time. In other words, the disk of the Milky Way might eventually become smaller while the center of the disk will remain largely intact.
Many studies of galaxy formation present evidence for the fact that normal matter within the cluster holds together compactly, while the gas clouds that form stars are pulled together into a single cloud. While this is a common feature of spiral and spiral galaxies, it is not true for normal elliptical or irregular shapes.
The simulations that have been conducted also provide evidence that the cold dark matter that makes up about 80% of the Milky Way is ionized, or has an outer shell. This outer shell, which is made up of highly dense neutral hydrogen, helps to keep the star-making plasma warm enough to fuse. Thus, although cold dark matter may not help to make stars in high redshift galaxies, it does help to keep the system in a relatively stable and consistent state, thus facilitating the evolution of complex galactic life.