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Date : 23 Dec 2021
James Webb Space Telescope (JWST) is not Hubble’s replacement
Tags :Why in News?
- NASA has announced the launch of the James Webb Space Telescope (JWST) on December 25.
- NASA says Webb is not Hubble’s replacement — rather, its successor whose science goals were motivated by the results from Hubble.
About JWST:
- The telescope is the result of an international collaboration between NASA, the European Space Agency (ESA), and the Canadian Space Agency.
- JWST, which is a large infrared telescope, will study “every phase” in the history of the universe, including the Big Bang, the formation of solar systems that are capable of supporting life on other planets, and also, the evolution of our Solar System.
- It is also considered a successor of the Hubble Telescope and will extend and complement its discoveries.
- Because of JWST’s longer wavelengths, it will be able to look further back in time, “to find the first galaxies that formed in the early Universe, and to peer inside dust clouds where stars and planetary systems are forming today”.
- JWST will be launched on an Ariane 5 ECA rocket from French Guiana in South America.
What are the telescope’s main goals?
JWST has four central goals:
- To search for the first galaxies that formed after the Big Bang,
- To determine how galaxies evolved from their earlier formation until now,
- To observe the formation of stars from the first stages to the formation of planetary systems and to measure the physical and chemical properties of planetary systems and
- Investigate the potential for life in such systems.
