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Current Affairs 27th Aug 2024 for UPSC Prelims Exam

Nangarni Spardha

Current Affairs 27th Aug 2024 for UPSC Prelims Exam_4.1

  • It is a centuries-old traditional Oxen race.
  • Location: Ratnagiri (Maharashtra)
  • It is held during the rainy season

Ocean of Magma on Moon’s Surface

Context

A recent study revealed that a type of rock known as ferroan anorthosite was found in moon soil. This discovery was confirmed using the Alpha Particle X-ray Spectrometer (APXS) on the Pragyaan rover.

Major Findings of Pragyaan Rover

  • Discovery of Sulphur & Other Elements:
    • It identified the presence of sulphur on the lunar surface which was not detected in this region by previous missions.
    • Some other elements like aluminium, calcium, iron, chromium, titanium, manganese, silicon, and oxygen were also detected.
    • These elements provide insights into the moon’s geological history.
  • Presence of ferroan anorthosite:
    • It reported the presence of a rock type called ferroan anorthosite in the lunar soil.
    • Scientists believe that these anorthosite rocks could be the remains of an ancient ocean of magma that blanketed the moon’s surface around four billion years ago.
    • Ferroan anorthosite is a type of igneous rock that is composed primarily of plagioclase feldspar with a higher iron content.
Theories related to Moon’s origin
  • According to Scientists, the moon was born from the remains of a headlong collision between the early earth and some rogue planetary body years ago.
  • Its rocky surface was initially molten.
  • The minerals in there slowly crystallised as the lava cooled to form rocks of various kinds, including ferroan anorthosite.

Key facts about the Chandrayaan-3 Mission

  • It is ISRO’s lunar exploration mission which successfully demonstrated its ability to safely land and operate a rover on the Moon’s surface.
  • It consists of a propulsion module, a Lander (Vikram), and a Rover (Pragyan).
  • Launch: July 14, 2023 from Satish Dhawan Space Centre
  • Landing on Moon: August 23, 2023 at Shiv Shakti Point
Advanced instruments in Chandrayaan-3
Lander payloads:

  • Chandra’s Surface Thermophysical Experiment (ChaSTE): To measure thermal conductivity and temperature on the surface.
  • Instrument for Lunar Seismic Activity (ILSA): To detect Moonquakes.
  • Laser Retroreflector Array (from NASA): To measure distances using laser ranging to understand the dynamics of the Moon system.

Rover payloads:

  • Alpha Particle X-ray Spectrometer (APXS): To analyse the elemental composition of the lunar soil and rocks.
  • Laser Induced Breakdown Spectroscope (LIBS): To examine the chemical and elemental composition of the lunar surface.

National Monsoon Mission

Context

The Indian government is planning to launch a new mission, with a budget of around Rs 10,000 crore, to make weather forecasts more accurate. It is likely to be several times bigger than the Monsoon Mission.

About National Monsoon Mission (NMM)

  • It was launched to improve monsoon rainfall prediction models.
  • Launch year: 2012
  • Nodal Ministry: Ministry of Earth Sciences (MOES)
  • Implementing Agency: Indian Institute of Tropical Meteorology (IITM), Pune.
  • Objectives:
    • To improve Seasonal and Intra-seasonal Monsoon Forecast
    • To improve Medium Range Forecast.
Indian Meteorological Department (IMD)
  • It is the principal government agency in all matters relating to meteorology and allied subjects.
  • Establishment Year: 1875 (New Delhi)
  • Regional Meteorological Centres of IMD (6):  Mumbai, Chennai, New Delhi, Calcutta, Nagpur and Guwahati.
  • Nodal Ministry:  Ministry of Earth Sciences

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