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Chandrayaan-2 Confirms Solar Events Impact Moon's Atmosphere

10/20/2025

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Summary

Story summary

Chandrayaan-2, using ISRO's CHACE-2, observed a rise in the dayside lunar atmosphere's total pressure during a solar event on May 10, 2024, indicating Coronal Mass Ejections (CMEs) effects on the Moon's exosphere.
The data show the neutral-atom number density rose by more than an order of magnitude, confirming prior theoretical models.
The finding advances lunar space weather understanding and implies that future lunar bases must account for extreme solar events.

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Story summary

Chandrayaan-2, using ISRO's CHACE-2, observed a rise in the dayside lunar atmosphere's total pressure during a solar event on May 10, 2024, indicating Coronal Mass Ejections (CMEs) effects on the Moon's exosphere.
The data show the neutral-atom number density rose by more than an order of magnitude, confirming prior theoretical models.
The finding advances lunar space weather understanding and implies that future lunar bases must account for extreme solar events.