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Hubble Space Telescope

Context:

The Hubble Space Telescope measured the mass of a white dwarf designated LAWD 37, which burned out over 1 billion years ago. In the work, scientists used a phenomenon called gravitational lensing.

Relevance:

GS III: Science and Technology

Dimensions of the Article:

  1. What is Gravitational lensing?
  2. About the Hubble telescope

 What is Gravitational lensing?

  • Gravitational lensing is the bending of light by objects of great mass, first predicted by Albert Einstein in 1915.
  • It occurs when a massive object, like a cluster of galaxies, creates a gravitational field that distorts and magnifies the light from distant galaxies.
  • This allows researchers to study details of early galaxies too far away to be seen with the most powerful telescopes.

About the Hubble telescope

  • The Hubble Space Telescope is named after astronomer Edwin Hubble and was launched by the Space Shuttle Discovery in 1990.
  • It is a large, space-based observatory that has revolutionized astronomy with its coverage from ultraviolet to near infrared.
  • Hubble is part of NASA’s Great Observatories Program, which also includes the Spitzer Space Telescope, the Compton Gamma-Ray Observatory (CGRO), and the Chandra X-Ray Observatory (CXO).

-Source: Indian Express


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