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Mahesh

28/08/23 06:47 AM IST

Chandrayaan-3 mission

In News
  • Chandrayaan-3 mission is expected to send home information about Moon's atmosphere, soil, minerals etc which may be the first of its kind for the scientific community across the world.
Outcomes and features of the mission
  • The Vikram Lander and Pragyan Rover have started performing the Mission objectives exactly as per the schedule.
  • Vikram Lander carries seismometer (ILSA), ChaSTE, Langmuir Probe (RAMBHA-LP), and a laser retroreflector array payloads and the Pragyan Rover carries Alpha Particle X-ray Spectrometer (APXS) and Laser Induced Breakdown Spectroscope (LIBS) payloads.
  • The Instrument for Lunar Seismic Activity (ILSA) will make continuous observations of the lunar seismic activities as well as the meteors impacting the lunar surface. ILSA is the first-ever seismometer sent to study the vibrations on the lunar surface at higher lunar latitudes.
  • These measurements will help us plan for future habitat developments by understanding the frequency of potential hazards from meteor impacts and seismic activities.
  • The ChaSTE (Chandra’s Surface Thermo-physical Experiment) is another key instrument mounted on the Vikram Lander.
  • Ten high-precision Thermal Sensors, mounted on ChaSTE, will dig into the moon’s top soil to study temperature variations. ChaSTE is the first-ever experiment to study the thermophysical properties of the first 10 cm of the lunar surface.
  • Surface of the moon undergoes substantial temperature variations during the lunar day and night, with minimum temperatures of <-100 ℃ around the local midnight, and >100℃ around the local noon.
  • The porous lunar topsoil (having a thickness of about ~5-20 m) is expected to be an excellent insulator.
  • The study of the near-surface plasma of the Moon and its time variations will be carried out by the Langmuir probe.
  • RAMBHA-LP will be the first-ever in-situ observation of the near-surface plasma and its diurnal variation in higher lunar latitude, where the Sun elevation angle is less.
  • The Alpha Particle X-ray Spectrometer (APXS) and Laser Induced Breakdown Spectroscopy (LIBS), mounted on the Pragyan, will make the measurements of lunar surface elements at the stop-points (once in about 4.5 hours) along the Rover track.
  • The Chandrayaan-3 Mission carries the Spectropolarimetry of Habitable Planet Earth (SHAPE) onboard the Propulsion orbit of the moon.
  • It will help identify earth-like exoplanets in future.
Source- PIB

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