You can't see the Great Wall of China from space, Chinese astronaut Fei Junlong told students in Shanghai Monday, perhaps finally killing a myth that has existed for decades.

Fei and his companion Nie Haisheng, who were aboard Shenzhou VI during China's second manned space mission last October, attended the opening ceremony of a space exhibition at the Shanghai Science and Technology Museum Monday.

They didn't talk to the press, but did meet with primary and middle school students to answer some of their questions.

"We couldn't see the Great Wall from space," Fei said, noting that from space there is little difference between the Great Wall and its surroundings.

The Great Wall has long been noted as the only man-made object to be visible from space, despite several American astronauts denying the claim.

More than 100 artifacts related to Shenzhou VI went on exhibition at the museum Monday. The show will run through April 16.

Editor: Yan