Cosmology is the research into the history and development of the universe. The universe is continually expanding, and humanity may never discover all its secrets. Cosmology, however, has helped us understand much more about how the universe is the way it is now. There are many instruments and instruments used in cosmology, such as the Hubble Space Telescope. This essay will discuss how the Hubble Space Telescope works and which parts play what role in discovering new things about the universe and space. The physics and operation of the instruments within this instrument will be explained. What this space telescope helps us discover about the universe and the reliability of that knowledge will also be discussed and evaluated. The Hubble Space Telescope, named after Edwin Hubble, is an operational telescope orbiting outside the Earth's atmosphere approximately 600 km above the Earth's surface. Funded for construction in the 1970s and built by NASA, launch was scheduled for 1983. Due to technical difficulties, the final launch occurred on April 25, 1990. The Hubble Space Telescope is known as the most useful cosmological instrument in use today. The Hubble Space Telescope is made up of five main parts. The diagram on the right marks them on the instrument. The communications antenna sends back images taken with the telescope. He also receives instructions sent by cosmologists who control him from the earth. The communications antenna sends these instructions to the control and pointing systems, which move the telescope to the desired position. Solar panels on the side power the telescope. In space, solar panels can absorb more energy from the sun, as there is less interference from Earth's atmosphere. The energy from the center of the card in space came to be as it is now and to discover more about how the universe develops. This telescope is also very environmentally friendly as it only uses energy from the sun. However, the process of launching this space instrument cost approximately 1.5 billion US dollars. Many unexpected technical difficulties also occurred after its launch. Five maintenance missions were organized to repair the space telescope. The effectiveness of this space telescope in the knowledge and information it has provided to humanity cannot be measured in money. The quality of the telescope is very high, as it is located outside the Earth's atmosphere, which is known to block light. This is why telescopes on Earth are usually high in the mountains where the atmosphere is thinner, so as to produce clearer images. Since the space telescope is in space, interference from the atmosphere is non-existent.