Topic in News:- NASA unveiled images of the Southern Ring Nebula, taken from the James Webb Space Telescope.

Other important points

  • James Webb Space Telescope is the largest and most powerful orbital observatory ever launched.
  • The cost of construction is $ 9 billion and it is an infrared telescope.
  • It was launched on December-25-2021 and reached its destination in solar orbit nearly 1 million miles from Earth a month later.


  • It is a cluster of stars & gaseous clouds.
  • It is an interstellar cloud of dust, hydrogen, helium, and other ionized gasses.
  • The dust and gasses in a nebula are spread out, but due to gravity, it begins to pull together and form clumps of dust and gas.  When these clumps get bigger and bigger, their gravity enhances.
  • Eventually, this clump of dust and gas gets so big that it collapses from its own gravity and it causes the material at the center of the cloud to heat up-and this hot core is the beginning of a star.
  • The closest known nebula to Earth is called the Helix Nebula. It is approximately 700 light-years away from Earth.


  • JWST’s developed by joint collaboration of the National Aeronautics and Space Administration (NASA), the European Space Agency (ESA), and the Canadian Space Agency (CSA).
  • It was launched in December 2021 on an Ariane 5 rocket from Kourou, French Guiana.
  • It reached orbit at the Sun-Earth L2 Lagrange point in January 2022.
  • It is designed primarily for near-infrared astronomy, but can also view orange & red visible light and mid-infrared regions, depending on the instrument.
  • It is the most powerful infrared telescope.
  • It is also considered the successor of the Hubble Telescope.
  • The telescope will study across the fields of astronomy & cosmology such as stars, the formation of galaxies, exoplanets, etc.
  • Telescope is named after James E. Webb, who was the administrator of NASA from 1961 to 1968 during the Mercury, Gemini, and Apollo programs.


  • SRN is also known as NGC 3132,  Eight-Burst Nebula, or Caldwell 74.
  • It is a bright and extensively studied planetary nebula in the constellation Vela.
  • Its distance from Earth is estimated at about 613 pc. or 2,000 light-years.

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