COLUMBUS, Ohio (AP) — The wife of former astronaut Neil Armstrong, the first man to walk on the moon, says he's "amazingly resilient" and making progress toward recovering from heart surgery.

Carol Armstrong told The Associated Press in an email Friday that in the days since the surgery, her 82-year-old husband has been able to get out of bed and sit in a chair, and then walk up and down the corridor.

She says: "Neil is amazingly resilient and on track with his rehab schedule." She credits her husband's drive and the expertise of his doctors.

The name of the hospital where the surgery occurred hasn't been disclosed. The Armstrongs live in a Cincinnati suburb.

Neil Armstrong commanded the Apollo 11 spacecraft that landed on the moon on July 20, 1969.