Photograph of Dr. Thornton conducting research during the STS-8 mission. This photograph shows Dr. Thornton using a treadmill and wearing banners for North Carolina University and the US Air Force on his shirt.

Photograph of Dr. Thornton conducting research during the STS-8 mission. This photograph shows Dr. Thornton using a treadmill while wearing a banner for the US Air Force on his shirt.

Photograph of Dr. Thornton conducting research during the STS-8 mission. This photograph shows Dr. Thornton accessing the contents of a locker that contains medical research equipment.

Photograph of Dr. Thornton conducting research during the STS-8 mission. This photograph shows Dr. Thornton writing in a notebook.

Photograph of Dr. Thornton conducting research during the STS-8 mission. This photograph shows Dr. Thornton giving an audiometry exam to mission specialist Dale A. Gardner.

Photograph of Dr. Thornton conducting research during the STS-8 mission. This photograph shows Dr. Thornton gathering evoked potential data on himself.

Photograph of Dr. Thornton conducting research during the STS-8 mission. This photograph shows Dr. Thornton wearing a cervical collar.

Photograph of Dr. Thornton conducting research during the STS-8 mission. This photograph shows Dr. Thornton wearing a G-suit.

Dr. Thornton using a treadmill while wearing banners for the US Air Force and the University of North Carolina on his shirt.

Dr. Thornton using a treadmill while wearing a banner for the University of North Carolina on his shirt.