As scientists at ISRO gear up for the soft landing of the much-awaited Chandrayaan-3 spacecraft on the surface of the Moon, the space agency may postpone the touchdown to August 27 in the event that health parameters of the lander module are found to be "abnormal", a senior official has said.

ISRO had planned the soft landing of the Chandrayaan-3 spacecraft at 06.04 pm IST on August 23.