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Challenger spaceship

  • IASbaba
  • November 15, 2022
  • 0
Science and Technology
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Context: NASA has announced the recovery of debris from the Challenger spaceship that exploded 73 seconds after lift-off killing all seven astronauts aboard 37 years ago.

About the mission:

  • The shuttle mission, which was NASA’s 25th, was supposed to be a six-day mission wherein, the seven-member crew was to deploy a large communications satellite, deploy and retrieve an astronomy payload to study Halley’s Comet.
  • A teacher, also the first civilian to head to space, was to conduct lessons for schoolchildren from orbit.
  • The primary objective of the STS-51L mission was to launch the second Tracking and Data Relay System (TDRS) satellite into orbit.

The Space shuttle disaster:

  • The spacecraft broke apart on January 28, 1986 after it suffered a major malfunction less than 2 minutes into its flight with investigations revealing freezing temperatures having affected the integrity of O-ring seals in the solid rocket booster segment joints.
  • The O-ring seals are used to keep fluids from leaking and components sealed.
  • Ice had formed on the shuttle amid freezing temperatures as Challenger remained on the launch pad overnight.
  • The last Challenger mission was dubbed as STS-51L.

Source: Indian Express

Previous Year Question

Q.1) If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth?  (2022)

  1. GPS and navigation systems could fail.
  2. Tsunamis could occur at equatorial regions.
  3. Power grids could be damaged.
  4. Intense auroras could occur over much of the Earth.
  5. Forest fires could take place over much of the planet.
  6. Orbits of the satellites could be disturbed.
  7. Shortwave radio communication of the aircraft flying over polar regions could be interrupted.

Select the correct answer using the code given below:

  1. 1, 2, 4 and 5 only
  2. 2, 3, 5, 6 and 7 only
  3. 1, 3, 4, 6 and 7 only
  4. 1, 2, 3, 4, 5, 6 and 7

 

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