Potrait of astronaut Carl WalzS91-32691 (3 Mar 1991) --- Astronaut Carl E. WalzImage Credit: NASA Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/astronaut-carl-walz-48997583567-o/Copy URL to clipboard> DownloadShareTagsInternational Space StationImage CreditNASASize6246x7807px