Summer 1969. The astronauts of Apollo 11 successfully land and walk on the moon. The crew will now quarantine for 21 days following contact with lunar material. Summer 1969. The astronauts of Apollo 11 successfully land and walk on the moon. The crew will now quarantine for 21 days following contact with lunar material. Summer 1969. The astronauts of Apollo 11 successfully land and walk on the moon. The crew will now quarantine for 21 days following contact with lunar material. Summer 1969. The astronauts of Apollo 11 successfully land and walk on the moon. The crew will now quarantine for 21 days following contact with lunar material.