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Astronauts John Glenn, right, and Scott Carpenter pose in front of a Mercury Capsule after Glenn was named to make this countrys first manned orbital flight, Nov. 29, 1961, Cape Canaveral, Fla. Carpenter was chosen as his backup pilot. (AP Photo) ( John Glenn and Scott Carpenter 1961 )

US Mercury program astronauts in their space suits pose for a family picture in 1962. 1rst row from left to right : Walter M. "Wally" Schirra, Donald K. "Deke" Slayton, John Glenn, Scott Carpenter ; 2nd row from left to right : Alan Shepard, Virgil Grissom, Gordon Cooper. AFP PHOTO NASA (Photo credit should read /AFP/Getty Images) ( ARP2315359 )

Vice President Richard Nixon poses on Capitol steps in Washington, May 28, 1959 with seven astronauts who are undergoing training for space flight. From left, front row: Leroy Gordon Cooper, Nixon; and Alan Bartlett Shepard; rear row: Malcolm Scott Carpenter; Waller Marty Schirra Jr; Virgil Ivan Grissom; Donald Kent Slayton, and John Herschel Glenn, standing. They are posing with a model of a rocket. (AP Photo) ( Vice President Richard Nixon Poses with Seven Astronauts )

President John F. Kennedy shakes hands in his White House office with Astronaut Scott Carpenter on June 5, 1962, as he congratulates him personally on his three-orbit flight around the world in space. Mrs. Carpenter and three of their four children are in the group. The children, from left, are: Robyn Jay, 10, foreground; Mark Scott, 12, and Candace Noxon, 5. Kristine Elaine, 6, is hidden behind the president. (AP Photo/Henry Griffin) ( President John F. Kennedy )

Astronaut Scott Carpenter and his wife, Rene, inspect interior of his space capsule during ceremonies at Cape Canaveral, Florida on May 27, 1962. At left are their children, Robyn Jay, 10; Candace Noxon, 5, foreground Kristine Elaine, 6, and Mark Scott, 12, right center. Carpenter was awarded the National Aeronautics and Space Administration distinguished service medal for his orbital flight. (AP Photo) ( Astronaut Scott Carpenter and wife Renee Children Family )

Flanked by his mother, Mrs. Florence Carpenter, and his wife, Renee, astronaut Scott Carpenter speaks to a crowd that greeted him at the airport on his arrival on May 28, 1962 in Denver. Standing behind Carpenter is U.S. Sen. Gordon Allott, R-Colo. After a few minutes at the airport, Carpenter and his family left for nearby Boulder where they will stay. (AP Photo/WPS) ( Astronaut Malcolm Scott Carpenter Florence Carpenter and Rene )

Astronaut Scott Carpenter and his wife, Renee acknowledge applause from the crowd as he heads a parade down the main street of his home town of Boulder on May 29, 1962. He spent a night in Boulder and will take part in a Memorial Day parade in Denver. (AP Photo) ( Astronaut Scott Carpenter and Wife Renee Carpenter )

With spectator space at a premium, several men found choice spots atop the modernistic roof, upper right, of a department store to look down at astronaut Scott Carpenter and his wife, Renee, as they passed by in a parade on May 30, 1962 in downtown Denver. A crowd estimated at 300,000 by police jammed the streets in a windup tribute to Carpenter during his Colorado visit. (AP Photo/WPS) ( Astronaut Scott Carpenter and Renee )

Astronaut Scott Carpenter gestures with one hand after donning his space suit in Hangar S prior to being shot into orbit at Cape Canaveral, Fla. on May 24, 1962. Carpenter, the second American to orbit the Earth and first person to explore both the heights of space and depths of the ocean, died Thursday, Oct. 10, 2013 after a stroke. He was 88. (AP photo/NASA, File) ( Obit Carpenter )

Astronaut Scott Carpenter has his space suit adjusted by a technician in Cape Canaveral, Fla. on Aug. 1962. Carpenter, the second American to orbit the Earth and one of the last surviving original Mercury 7 astronauts, died Thursday, Oct. 10, 2013. He was 88. (AP Photo, File) ( Obit Scott Carpenter )

Astronaut M. Scott Carpenter in a space suit about to enter Aurora 7 space capsule in May 1962. (AP Photo) ( Scott Carpenter )

John Glenn, center, is greeted by fellow astronauts following his orbital flight, Feb. 23, 1962, Grand Turk Island, Turks and Caicos Islands. Left to right is: Scott Carpenter, Donald Slayton, Glenn, Virgil Grissom, Alan Shepard and Walter Schirra. The seventh member of the astronaut team, Leroy Cooper, was not available. (AP Photo/Pool) ( John Glenn Grand Turk Island 1962 )

Astronaut Scott Carpenter, right, looks toward John Glenn while they posed for photographers after Glenn was debriefed after his historic triple orbit flight around the earth, Feb. 21, 1962, Grand Turk Island, Turks and Caicos Islands. Carpenter was the backup pilot for Glenns flight. (AP Photo) ( John Glenn and Scott Carpenter 1962 )

American astronaut Lt Col John Glenn checks over notes with back-up pilot Scott Carpenter after a simulated flight, prior to the Mercury-Atlas 6 mission at Cape Canaveral, the object of which is to put the first American spaceman into orbit around the Earth. (Photo by Keystone/Getty Images) ( martyn19/hulton/people/48/0271 )

Astronaut Scott Carpenter looks over the 35mm German made Robot camera he?ll hold in his hand to make pictures on his orbital flight scheduled for Thursday. With Carpenter, May 22, 1962 at his Cape Canaveral training quarters is Dr. Robert B. Voas, the astronauts' training physician. (AP Photo) ( Scott Carpenter )

Astronaut Scott Carpenter is assisted into his space suit by suit technician Al Rochford during preparations, May 17, 1962 at Cape Canaveral missile center for his orbital flight around the earth. Carpenter is scheduled to make a three orbit trip on Saturday. A sensor lead is taped to Carpenters neck. This photo was released at Cape Canaveral by the National Aeronautics and Space Administration. (AP Photo) ( Scott Carpenter )

Astronaut Scott Carpenter gets a final going over from a suit technician as he prepares for orbital flight at Cape Canaveral, Florida, May 24, 1962. (AP Photo) ( Scott Carpenter )

Astronaut M. Scott Carpenter, one of seven men being trained for space flight, moves his arms to test the mobility of a full pressure suit being developed for use by the Project Mercury trainees. The suit is a prototype designed to protect the astronauts from heat and pressure conditions expected to be encountered during flight. The tests are being conducted at the Navy Air Material Center, Philadelphia, Pennsylvania, Nov. 23, 1959. (AP Photo) ( Scott Carpenter )

To measure the ability of Project Mercury astronaut candidates to function under the stress of heat, they were put into a heat chamber for an extended period. With the temperature at 130 degrees Fahrenheit, Scott S. Carpenter spends this period reading. Test was conducted at Wright Air Development Center, Ohio, April 8, 1959. (AP Photo) ( Scott Carpenter )

Astronaut M. Scott Carpenter in May 1962. (AP Photo) ( Scott Carpenter )

The original seven Mercury astronauts are shown during training at NASA Langley Research Center in March 1961 in their flight suits. From left, Lt. M. Scott Carpenter, Capt. Gordon Cooper, Col. John H. Glenn Jr., Capt. Virgil "Gus" Grissom, Lt. Comdr. Walter Schirra, Lt. Comdr. Alan B. Shepard Jr. and Capt. Donald K. "Deke" Slayton. (AP Photo/Nasa) ( MERCURY SEVEN )

A frogman attaches flotation gear to Aurora 7 capsule of Scott Carpenter after the astronaut splashed down in the ocean following three-orbit whirl from Cape Canaveral, Florida, May 24, 1962. (AP Photo) ( Scott Carpenter )

Astronaut Scott M. Carpenter in civilian clothes, looking out of rocket nose cone with astronaut John Glenn on June 8, 1959. (AP Photo/CPG) ( Scott Carpenter and John Glenn Posing Rocket Nose )

U.S. Astronaut Malcolm Scott Carpenter in 1960. (AP Photo) ( Malcolm Scott Carpenter Portrait )

The last remaining four of the original "Mercury Seven," from left, Gordon Cooper, Walter Schirra, Scott Carpenter, and John Glenn, stand while the colors are presented during a memorial service for the first American in Space, Alan Shepard, at Johnson Space Center in Houston, Sat. Aug 1, 1998.(AP Photo/Michael Stravato) ( SHEPARD MEMORIAL )

Astronaut Scott Carpenter listens to a question from the media about his experience in space, at the Kennedy Space Center in Cape Canaveral, Fla. on Feb. 17, 2012. Carpenter, the second American to orbit the Earth and one of the last surviving original Mercury 7 astronauts, died Thursday, Oct. 10, 2013. He was 88. (AP Photo/Michael Brown, File) ( Obit Carpenter )

Mercury 7 astronauts Gordon Cooper (L), Wally Shirra (C) and Scott Carpenter (R) pose for the media in this 28 October 28, 1998 file photo during a press conference at Kennedy Space Center, Florida. Scott Carpenter's wife, Patty Carpenter, announced her husband died on October 10, 2013 in Denver, Colorado. He was 88. Carpenter was in hospice care after having a stroke, according to media report. Carpenter was the second US astronaut to orbit Earth and was a test pilot, astronaut and aquanaut. He was best known as one of the original seven astronauts selected for NASA's Project Mercury in April 1959. TONY RANZE/AFP/Getty Images ( 523679676 )

M. Scott Carpenter, a member of America's first group of astronauts, is now a member of the country's first team of aquanauts. He and nine fellow members of the team were introduced at Long Beach, California on July 23, 1965 where he is shown during a press conference at which he said he was taking part in experiments in living for extended periods under water because of similarities between investigations of space and ocean. (AP Photo/ERB) ( Astronaut Scott Carpenter Aquanaut Posing )

Scott Carpenter shown back stage at the Royale Theatre, New York on Nov. 7, 1963 where the David Merrick, London hit 'The Rehearsal' is playing. The entire company of the show is English. The members of the cast with the noted astronaut are from left to right: Adrienne Corri, Scott Carpenter and Coral Browne. (AP Photo) ( Scott Carpenter with Adrienne Corri and Coral Browne Actress )

Astronaut Scott Carpenter poses with a model of the Lunar Excursion Module (LEM) at Grumman Aircraft engineering Corp. plant in Bethpage, N.Y. on March 26, 1967. Carpenter, the second American to orbit the Earth and first person to explore both the heights of space and depths of the ocean, died Thursday, Oct. 10, 2013 after a stroke. He was 88. (AP Photo/Camerano, File) ( Obit Carpenter )