Aditya-L1 solar mission UPSC NOTE


  • On January 6 evening, scientists and engineers of the ISRO were translated by a computer onboard the Aditya-L1 spacecraft into manoeuvres that guided it into orbit around an imaginary point in space. 

  • Aditya-L1 reached its destination, around the L1 Lagrange point.

  • From where it will have an unfettered view of the sun for its expected lifetime of five years.

  • Aditya-L1 is an observatory-class solar mission that will study the sun with seven instruments:

  • VELC, a coronagraph to study the uppermost layer of the sun’s atmosphere.

  • SUIT, an ultraviolet imaging telescope.

  • SoLEXS and HEL1OS, to study solar flares and coronal mass ejections.

  • ASPEX and PAPA, to study the solar wind and plasma.

  • A set of digital magnetometers to measure properties of the magnetic field around the spacecraft. 

  • ISRO picked the L1 Lagrange point — 1.5 million km from the earth in the earth-sun direction and one of five Lagrange points in the earth-sun system.

  • Because the gravitational influences of the two bodies interact such that a smaller body here will not experience a net tug towards either. 

  • Aditya-L1 can stay at L1 while expending little fuel. 

  • Its scientific mission will begin in a month or so, once its thrusters’ emissions drift away.

  • Aditya-L1 supplements India’s storied history of observing the sun.

  • Dating back to the Kodaikanal Solar Observatory, which commenced operations in 1901 — by lofting it into space. 

  • It also follows the XPoSat mission, launched on January 1 to become only the world’s second X-ray polarimetry satellite.

  •  Eight years after AstroSat, which reached several highs of its own

  • An important issue with such achievements is public perception

  • While Aditya-L1 and AstroSat are big strides from India’s point of view.

  • They pale in comparison to the imaging abilities of the James Webb Space Telescope.

  • Which is operated by three space agencies. 

  • Many continue to expect the Indian spacecraft to capture hi-res photographs of the cosmos and are disillusioned when it does not. 



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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Aditya-L1 solar mission UPSC NOTE
Aditya-L1 solar mission UPSC NOTE
Learnerz IAS | Concept oriented UPSC Classes in Malayalam
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