New Delhi, April 1 -- The countdown is underway at the National Aeronautics and Space Administration (NASA)'s Kennedy Space Center as it prepares for the liftoff of Artemis II, which will send four astronauts around the moon and back.

This is the first crewed lunar mission since 1972, and experts say that despite extensive preparations, safety systems, and built-in redundancies, human spaceflight remains inherently risky, ABC News reported.

Danny Olivas, former NASA astronaut and engineer, said, "I think it'd make everybody feel comfortable to say that all the risk was knocked down to zero." However, he added that the truth is the risk is not knocked down to zero, and it never will be.

Lifesaving suits: According to the report, the fou...