On "Your World" today, astronaut Captain Gene Cernan discussed his fears for America's space program after a SpaceX rocket exploded yesterday.

The rocket was carrying supplies to the International Space Station. NASA said the accident occurred a few minutes into the flight from Cape Canaveral, Florida.

Cernan, who was the last man to walk on the surface of the moon as the commander of Apollo 17 in 1972, said he's very worried about America's space program.

"We need to get America back in space. This is just a sad occurrence certainly and I'm very disappointed just as well." 

He said that he thinks a lot of good people work at NASA, but they should take "an introspective look" and analyze the past failures.  

"We're humans, we are subject to make a mistake," Cernan said.

Watch the video clip above. 

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