The study of galaxy formation and growth is mostly concerned with the formation of galaxies, how galaxies develop over time, how the distribution of matter within a galaxy changes over time, and how the various stellar systems form and function within a galaxy. Astronomy has been an area of great interest to astronomers since the discovery of the planets in the solar system, which came as helioskies. They paved the way to the search for life in other solar system bodies.
The role of astronomy and science fiction in the growth of observational techniques.
Galaxy formation and growth is generally explained by observational studies using telescopes, such as those that are operated by the European Southern Observatory and NASA. Such studies use infrared detectors to detect molecular clouds, which are very cold clouds made of gas that are usually ionized. These clouds contain elements like sodium, iron, calcium, aluminum, magnesium, silicon, phosphorus, and carbon that will eventually start to be heated and vaporize.
The high quality of these measurements means that astronomers can make a catalog of the elements of these clouds at different times, which they can then use to study the properties of the molecules present in the clouds.
The evolution of galaxies – super elliptical galaxies.
Many astronomers are also interested in studying the evolution of galaxies, in particular super elliptical galaxies that are a common sight in the universe. They are unique in their structure, being very uneven, with many bulges or ” galaxies ” that are rotating in a very fast orbit around the centre. These bulges are made up of extremely hot gas, which is usually very concentrated in a few parts, which is what causes the spiral bulge. This study can also help astronomers to understand the process by which spiral arms were created. Astronomy and science fiction have inspired many theories about the evolution of galaxies.
Radio astronomers and their role in the study of galaxy formation.
Another group of specialists studying the universe are the radio astronomers who need to track very faint radio signals. These signals are produced by the interaction of gas molecules with surrounding dust particles. Usually these astronomers use Very Small Aperture (VLA) radio telescopes that are particularly designed to search for cosmic dust. Because this form of cosmic dust is usually very dim, it is very difficult to detect, and has been used to study the properties of galaxy formation with VLASims.
Properties of gravity and dark matter around major spiral clusters.
Astronomers who study the properties of gravity also want to study the distribution of dark matter halos around the major spiral clusters. A galaxy formation process needs to have dark matter to form a galaxy, but because of its great distance from the sun, astronomers cannot see through it. But they can look at the distribution of dark matter halos, called ‘hosting galaxies’ around such giant elliptical structures.
Some astronomers believe that these halos act as bridges between other galaxy formation regions, allowing a small fraction of the dark matter to escape into space, while the bulk of the matter sits there comfortably.
The most visible aspect of galaxy formation is the cosmic time.
This can be studied using Very Long Baseline Interval Surveys (VLBI). This technique involves taking a snapshot of the universe at various different moments in the cosmic time, which is a combination of light from stars and long distant supernovae. This method is more accurate than any other, allowing astronomers to study the properties of galaxy formation more precisely.
Astronomers look for signs of recently started or fully mature stars.
This can be detected using Very Long Baseline Interval Survey (VLBS), where a survey is taken every fifteen minutes around the clock for a period of one year. By measuring the amount of radio signal emitted by stars, astronomers can determine if the star has just started to burn out, or is much further from its prime. Some astronomers even use Very Long Baseline Interval Survey (Vilache) to study supernovae, which are explosions of very bright, last-minute explosions of a white dwarf star that had previously been a major galaxy formation candidate.
There are many other types of cosmology techniques that have helped astronomers discover the most common characteristics of galaxy formation. Some of these techniques include Very Long Baseline Interval Surveys (VLBI), where radio signals are used to study very faint faraway stars; ultra-faint dwarf galaxies (UVF), where the effects of white-out can be observed;
Very Redshift Queries (GRQ), which measures the redshift of a light source by tracking the shift of its spectrum to confirm or rule out its existence; and super spiral structure studies (SSS), which look for shells or ‘barrels’ that are distorted by a massive disk of gas cooling very quickly around a spiral star. These studies combined with supercomputer modeling can give highly accurate results. They are helping to make our understanding of cosmology better.