Mains Practice Question
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Topic
A simple introduction to this answer can revolve around a general statement about james webb telescope.
James Webb Space Telescope (JWST) is an international collaboration between NASA, ESA (the European Space Agency), and the Canadian Space Agency (CSA).
The James Webb Space Telescope (sometimes called JWST or Webb) will be a large infrared telescope with a 6.5-meter primary mirror. The telescope was launched on an Ariane 5 rocket from French Guiana in 2021.
It will explore every stage of our Universe’s history, from the first brilliant glows after the Big Bang to the development of solar systems capable of supporting life on planets such as Earth and the evolution of our own Solar System.
Body
You may incorporate some of the following points in the body of your answer:
Goals of James Webb Telescope
- The science goals for the Webb can be grouped into four themes:
- To look back around 13.5 billion years to see the first stars and galaxies forming out of the darkness of the early universe.
- To compare the faintest, earliest galaxies to today’s grand spirals and understand how galaxies assemble over billions of years.
- To see where stars and planetary systems are being born.
- To observe the atmospheres of extrasolar planets (beyond our solar system), and perhaps find the building blocks of life elsewhere in the universe.
Difference between James Webb and Hubble Telescopes
- James Webb will primarily look at the Universe in the infrared while Hubble primarily studied optical and ultraviolet wavelengths (though it has some infrared capability).
- Webb has a much bigger mirror than Hubble which means light collecting area of Webb can peer farther back into time than Hubble is capable of doing.
- Hubble is in a very close orbit around the earth, while Webb will be 1.5 million kilometers (km) away at the second Lagrange (L2) point.
- The JWST will be able to see right through and into massive clouds of dust that are opaque to earlier generation visible-light observatories like the Hubble Telescope.
- Webb is equipped with cameras and other instruments sensitive to infrared or “heat” radiation, and the Hubble is not
Your conclusion should be short. You may include:
The JWST is the largest and most powerful telescope ever built. Recently, the United States space research agency NASA said the James Webb Space Telescope (JWST) has produced the deepest and sharpest infrared image of the distant universe, a major event in astronomy.
James Webb Space Telescope will be “a giant leap forward in our quest to understand the Universe and our origins”, as it will examine every phase of cosmic history: from the Big Bang to the formation of galaxies, stars, and planets to the evolution of our own Solar System.
Previous Year Questions 1.Launched on 25th December, 2021, James Webb Space Telescope has been much in the news since then. What are its unique features which make it superior to its predecessor Space Telescopes? What are the key goals of this mission? What potential benefits does it hold for the human race? (2022) |
