Chandrayaan 3 update: The Indian Space Research Organization (ISRO) on Friday revealed that the “Chandrayaan-3 Lander Module generated a spectacular ‘ejecta halo’ of lunar material” when it descended to the moon’s south pole on August 23, 2023.
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What does this mean ISRO’s new “Chandrayaan-3 result“you mean exactly? Read on to know how DailyExertNews decodes the scientific terms used by the ISRO in the latest update:
A document shared by the ISRO on halo’.”
This simply means that when the lander module of the Chandrayaan-3 mission descended to the lunar surface, it experienced thrusters and then a soft landing. During this process, a significant amount of surface epiregolith material was ejected from the moon. Epiregolith is moon rocks and soil, or regolith, or moon dust.
According to the ISRO, scientists estimate that around 2.06 tonnes of this epi-regolith or material was ejected from the moon during the landing. The material was moved over an area of 108.4 m² around the landing site.
This subsequently resulted in the formation of an ‘ejecta halo’. This halo appeared “as an irregular bright spot around the lander,” according to the abstract of the paper, written by Swati Singh, Prakash Chauhan, Priyom Roy, Tapas R. Martha and Iswar C. Das of ISRO’s National Remote Sensing Center (NRSC) . ), Hyderabad.
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The ‘ejecta halo’ was analyzed by these studies and the findings were published in the “Journal of the Indian Society of Remote Sensing”. The study was titled “Characterization of Ejecta Halo on the Lunar Surface Around Chandrayaan-3 Vikram Lander Using OHRC Images”.
“We compared the high-resolution panchromatic images before and after landing from the Orbiter High-Resolution Camera (OHRC) of the Chandrayaan-2 orbiter, hours before and after landing, and characterized this ‘ejecta halo’,” said read the article.
The article further stated: “Based on the mapped and classified uncorrelated ‘ejecta halo’ pixels, an estimated area of 108.4 m2 is estimated to be covered by lunar epiregolith ejecta that has been displaced due to the landing sequence of the Vikram lander. Empirically, we estimate that approximately 2.06 tons of lunar epiregolith was ejected as a result of the landing.”
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The Vikram lander of the Chandrayaan-3 mission made a successful soft landing on the south pole of the moon’s surface on August 23, 2023. With this, India became the first country to achieve this historic feat: the soft landing on the moon. It also became the fourth country – after the US, China and Russia – to successfully land on the lunar surface.
How is this Chandrayaan-3 result significant?
According to Business todaythe study provides “valuable insights into the implications of lunar landings on the complex surface of the Moon.” Meanwhile, the Economic times reported that this “discovery sheds light on the behavior of lunar materials during such events and opens new avenues for research and understanding of lunar geology”.
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Updated: Oct 27, 2023 5:58 PM IST