advances in telescopes in recent years and how they have helped unveil cosmic mysteries such as the shape of dwarf galaxies and the missing satellite problem. It shows how previous beliefs based on the cold dark matter (CDM) model might not be true. Dwarf galaxies, originally thought to have a central group of stars enclosed by auras of dark matter have shown instances of supernovas, according to supercomputer simulations. Astronomers have managed to get closer to the origin of dwarf galaxies using the Hubble Space Telescope. However astronomers intend to probe deeper into the cosmos by developing stronger tools such as James Webb Space telescope (expected to be launched in 2014) and the Thirty Meter Telescope (after 2018). Galaxies are expected to have chunks of dark matter circling their course around them. Scientists are making an effort to discover these by means of extensive sky surveys using devices such as the Fermi Gamma Ray Space Telescope.
"Dwarf galaxies are the building blocks for galaxies like the Milky Way," Governato notes. "Getting the bricks right is important."
The speaker emphasizes the necessity of understanding the origin of dwarf galaxies. The conclusions drawn from Cold Dark Matter (CDM) model in explaining their structure had been challenged by the studies that he conducted as a part the University of Washington. Since the formation of most noteworthy galaxies in our universe can be attributed to a hierarchical approach, analyzing the smaller galaxies is all the more significant. According to the CDM model, the magnitude of galaxies in the past was supposedly much smaller than they are now. Findings from telescopic campaigns have allowed researchers to peek into what the universe might have looked in the past. Hubble Space Telescope images have brought forth an illustration of galaxies as they were around 700 million years after the Big Bang. These proceedings support the goals which the speaker intended on achieving (analysing the smaller building blocks of galactic formations)
This article conveys the basic information about how galaxies were formed. Technological innovations have caused our understanding to change over the years. The original idea of the development of galaxies involved dark matter moving around in the universe, which drew in other matter to form elliptical shapes. This was improved by the Cold Dark Matter (CDM) Model aided by supercomputer simulations. Dwarf galaxies (considered as building blocks for larger ones) were thought to have clusters of stars in the centre enclosed in dark matter. This idea changed over time as studies revealed the presence of astral supernovas in each of them. The Hubble Space Telescope estimated galaxies in their infancy to have around 1% of the mass of our milky way which confirms their dwarf status. However they were found to have been cultivating stars in them for millions of years. The outer space is full of mysteries and upcoming technologies such as in James Webb Space Telescope and the Thirty Meter Telescope is expected to improve our understanding of the universe even more.
The article illustrates the importance of the topic by making the readers aware of all the galactic discoveries which have been made over the years. Issues worthy of mention, such as the doubtful shape of dwarf galaxies and the missing satellite problem have been put forth and explained. Scientific efforts made in the past, to comprehend these issues have been mentioned, along with the conclusions drawn. There had been a lot of misinterpretations held with regards to dwarf galaxies and the author has made an effort to clear them out. For instance an analysis of the color and appearance of new galaxies showed how they had been producing stars for a several years. This proves how our knowledge of the evolving galaxies is restricted to the strength of telescopes. The article goes on to mention the…