Diyodar meteorite

  • IASbaba
  • February 14, 2023
  • 0
Science and Technology
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Context: Diyodar meteorite that hit India in 2022 was India’s first aubrite in 170 years

About Diyodar Meteorite:

  • A meteorite is a celestial object (made of rocks and metals) that enters the atmosphere of the earth and reaches the surface.
  • The meteorite is a “rare, unique specimen” of aubrite.
  • India has been the site of hundreds of meteorite crashes, but this is only the second recorded crash of an aubrite.

What are aubrites? 

  • Aubrites “are coarse-grained igneous rocks that formed” in oxygen-poor conditions, and thus “contain a variety of exotic minerals that are not found on Earth”.
  • For example, the mineral heideite was first described in the Basti meteorite.
  • Source of Aubrites : not yet sure of their origin, but some signs indicate that they could be from the asteroid 3103 Eger or from the planet Mercury.
  • Composition: Around 90% of the meteorite was composed of orthopyroxene. Pyroxenes are silicates consisting of single chains of silica tetrahedra (SiO 4); orthopyroxenes are pyroxenes with a certain structure.

Source: The Hindu

Previous Year Questions

Q.1) Which one of the following statements best reflects the idea behind the “Fractional Orbital Bombardment System” often talked about in media? (2022)

  1. A hypersonic missile is launched into space to counter the asteroid approaching the Earth and explode it in space.
  2. A spacecraft lands on another planet after making several orbital motions.
  3. A missile is put into a stable orbit around the Earth and deorbits over a target on the Earth.
  4. A spacecraft moves along a comet with the same speed and places a probe on its surface.

Q.2) 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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