MONTREAL - The Canadarm is almost 30 years old, and it's moving back home.

The Canadian Press has learned that NASA and the Canadian Space Agency are currently discussing the return of the famous robotic limb.

A half-dozen Canadarms were built over the years: one remains on the International Space Station, but the ones on NASA shuttles will no longer be needed after NASA ends its shuttle program.

A NASA spokeswoman says the Canadian Space Agency has retained ownership of the original arm.

It flew on Space Shuttle Columbia in 1981 and, since then, has rotated with the other Canadarms to fly on numerous missions over the years.

When asked what it intends to do with the device, the Canadian Space Agency had no comment.

Paul Cabot, curator of the Canadian Air and Space Museum in Toronto, says his museum is very interested in acquiring the Canadarm.

The device has repaired satellites and helped build the International Space Station.