What is Ejecta halo?

Oct. 29, 2023

Recently, the Indian Space Research Organisation (ISRO) revealed that the "Chandrayaan-3 Lander Module generated a spectacular 'ejecta halo' of lunar material.

About Ejecta Halo:

  • The Vikram lander of the Chandrayaan-3 mission landed near the south pole of the moon.
  • During the action of descent stage thrusters and the consequent landing, a significant amount of lunar surficial epi regolith material got ejected, resulting in a reflectance anomaly or ejecta halo”,
  • Scientists from Indian Space Research Organisation estimate that about 2.06 tonnes of lunar epi regolith were ejected and displaced over an area of 108.4 m² around the landing site
  • Ejecta halo is an irregular, bright patch surrounding the lander.
  • Significance:
    • This discovery sheds light on the behaviour of lunar materials during such events.
    • It opens up new avenues for research and understanding lunar geology.

What is Regolith?

  • It is a blanket of unconsolidated, loose, heterogeneous superficial deposits covering solid rock.
  • Epiregolith is lunar rocks and soil, or regolith, or Moon dust.

Latest Current Affairs

See All