S90-34031 (1990) --- Astronaut Jeffrey A. Hoffman.

S78-35294 (20 September 1978) --- Astronaut candidate Jeffrey A. Hoffman in blue flight suit.

STS061-03-029 (2013 Dec 1993) --- Astronaut Jeffrey A. Hoffman displays tools used in the five space walks on the STS-61 Hubble Space Telescope (HST) repair mission. Hoffman was one of four space walkers making use of the variegated gear.

Space Shuttle mission STS-61 onboard view taken by a fish-eyed camera lens showing astronauts Story Musgrave and Jeffrey Hoffman's Extra Vehicular Activity (EVA) to repair the Hubble Space Telescope (HST).

51D-06-015 (12-19 April 1985) --- Astronaut Jeffrey A. Hoffman and Rhea Seddon mission specialists, demonstrate the effect of weightlessness on a slinky toy in the mid-deck of the Space Shuttle Discovery.

STS061-77-078 (7 Dec 1993) --- Astronaut Jeffrey A. Hoffman, anchored on the end of the Remote Manipulator System (RMS) arm, is pictured with the Wide Field/Planetary Camera (WF/PC I) during the third of five extravehicular activity?s (EVA). Astronauts Hoffman and F. Story Musgrave, seen near the stowage area for the WF/PC, had earlier installed the new camera (note white rectangle) on lower portion of telescope.

STS035-49-029 (2-10 Dec 1990) --- Posing on the middeck of Columbia, Orbiter Vehicle (OV) 102, are Mission Specialist (MS) Jeffrey A. Hoffman (mustache) and MS Robert A. R. Parker. Determining who is right side up is complicated by the microgravity of space. Hoffman's head is at the middeck floor and his feet are at the ceiling. The two crewmembers are in front of OV-102's port side with the waste collection system (WCS) contingency unit, side hatch, and galley visible behind them.

STS061-105-026 (7 Dec. 1993) --- Astronaut Jeffrey A. Hoffman signals directions to European Space Agency (ESA) astronaut Claude Nicollier, as the latter controls the Remote Manipulator System (RMS) arm during the third of five Extravehicular Activities (EVA) on the Hubble Space Telescope (HST) servicing mission. Astronauts Hoffman and F. Story Musgrave earlier changed out the Wide Field\Planetary Camera (WF\PC).

STS061-37-011 (7 Dec 1993) --- Astronaut Jeffrey A. Hoffman with Wide Field/Planetary Camera (WF/PC 1) during changeout operations. WF/PC-2 has already been installed in cavity (out of frame). Astronauts Hoffman and Story Musgrave are performing Extravehicular Activities (EVA) to repair the Hubble Space Telescope (HST).

S90-28700 (12 Feb 1990) --- Astronaut Jeffrey A. Hoffman, STS-35 mission specialist, takes a breather from an emergency egress training session in the Johnson Space Center?s (JSC) Shuttle mockup and integration laboratory. He wears an orange, partial pressure escape suit. Hoffman and six other crewmembers are in training for a nine-day mission supporting the ASTRO-1 payload later this year.

STS061-58-033 (7 Dec 1993) --- Anchored to the Space Shuttle Endeavour's Remote Manipulator System (RMS) arm, astronaut Jeffrey A. Hoffman works with the replacement Wide Field/Planetary Camera (WF/PC II) for the Hubble Space Telescope (HST) during the third of five space walks. Astronaut F. Story Musgrave, who joined Hoffman for three of the five space walks, helps with alignment at center frame.

STS061-87-046 (5 Dec 1993) --- Astronauts Jeffrey A. Hoffman (right) and F. Story Musgrave work near the base of the Hubble Space Telescope (HST) on the first of five spacewalks. Their particular mission here is to replace failed Rate Sensor Units (RSU) inside the telescope's housing. Hoffman is anchored to a foot restraint, mounted on the end of the Space Shuttle Endeavour's Remote Manipulator System (RMS) arm, while Musgrave is standing on a foot restraint attached to a support structure in the cargo bay.

STS075-302-016 (22 Feb.-9 March 1996) --- Soon after reaching Earth orbit, the blue shift team set up what they referred to as a "formal" meal on the space shuttle Columbia's middeck. Left to right are astronauts Franklin R. Chang-Diaz, STS-75 payload commander; Jeffrey A. Hoffman and Claude Nicollier, both mission specialists. Hoffman later told a gathering of Johnson Space Center employees that the meal was accompanied by classical music. Photo credit: NASA or National Aeronautics and Space Administration

STS061-74-046 (7 Dec 1993) --- Anchored on the end of the Space Shuttle Endeavour's Remote Manipulator System (RMS) arm, astronaut Jeffrey A. Hoffman (foreground) prepares to install the new Wide Field\Planetary Camera (WFPC II) into the empty cavity (top left) on the Hubble Space Telescope (HST). WFPC I is seen temporarily stowed at bottom right. Astronaut F. Story Musgrave works with a Portable Foot Restraint (PFR) at frame center, as his image is reflected in the shiny surface of the telescope. Hoffman and Musgrave shared chores on three of the five extravehicular activity?s (EVA) during the mission.

STS061-86-048 (5 Dec 1993) --- Astronauts F. Story Musgrave (foreground) and Jeffrey A. Hoffman are pictured near the end of the first of five extravehicular activity?s (EVA). Musgrave works at the Solar Array Carrier (SAC) in the Space Shuttle Endeavour's cargo bay. Hoffman, anchored to a foot restraint mounted on the end of the Space Shuttle Endeavour's Remote Manipulator System (RMS) arm, waits to be maneuvered to the forward payload bay. The original solar array panels are partially visible at top, while their replacements remain stowed in foreground. The crew's second pair of space walkers -- astronauts Kathryn C. Thornton and Thomas D. Akers -- later changed the solar arrays on the mission's second EVA.

S61-E-016 (6 Dec 1993) --- Astronaut Jeffrey A. Hoffman (frame center) remains secured by his feet on the end of Endeavour's robot arm as he prepares to participate in the replacement of Hubble Space Telescope's Wide Field/Planetary Camera (WF/PC). Astronaut F. Story Musgrave (just in frame at lower left corner) assists Hoffman in removing the new camera (WFPC-II) from the Scientific Instrument Protective Enclosure (SIPE). Electronic still photography is a relatively new technology which provides the means for a handheld camera to electronically capture and digitize an image with resolution approaching film quality. The electronic still camera has flown as an experiment on several other shuttle missions.

S90-28710 (12 Feb 1990) --- Astronaut Guy S. Gardner, STS-35 pilot, (standing) and Jeffrey A. Hoffman, mission specialist, prepare for egress training at the Johnson Space Center?s (JSC) Mockup and Integration Laboratory (MAIL) Bldg 9A. Gardner and Hoffman, wearing orange launch and entry suits (LES), adjust their parachute harnesses as they listen to instructions before training begins. The astronaut crewmembers and payload specialists for the scheduled May flight were specifically learning proper measures to take in the event of an emergency on the launch pad necessitating emergency evacuation of the orbiter.

STS035-19-021 (December 1990) --- STS-35 Mission Specialist Jeffrey A. Hoffman stretches out on the middeck floor while MS John M. (Mike) Lounge records his height. The two crew members are in front of the forward lockers aboard Columbia, Orbiter Vehicle (OV) 102. Hoffman steadies himself using the stowed treadmill and the lockers. Above Hoffman's head is a plastic bag filled with Development Test Objective (DTO) 634, Trash Compaction and Retention System Demonstration, trash compactor charcoal filtered bag lids. This image was selected by the Public Affairs Office (PAO) for public release.

STS035-12-015 (2-11 Dec 1990) --- Astronaut Jeffrey A. Hoffman, STS 35 mission specialist, uses a manual pointing controller (MPC) for the Astro-1 mission's Instrument Pointing System (IPS). By using the MPC, Hoffman and other crewmembers on Columbia's aft flight deck, were able to command the IPS, located in the cargo bay, to record astronomical data. Hoffman is serving the "Blue" shift which complemented the currently sleeping "Red" shift of crewmembers as the mission collected scientific data on a 24-hour basis. The scene was photographed with a 35mm camera.

This is a Space Shuttle mission STS-61 onboard view showing astronauts Story Musgrave and Jeffrey Hoffman preforming repairs to the Hubble Space Telescope (HST) during their Extra Vehicular Activity (EVA). Astronauts' work was made easier by the HST's many crew aids. Astronaut Musgrave makes use of one of the spacecraft's handholds. Launched on December 1, 1993, the Space Shuttle Orbiter Endeavor STS-061 mission was the 59th Shuttle flight.

STS035-10-015 (2-10 Dec 1990) --- This busy scene shows cameras and supportive photographic gear temporarily stowed on Space Shuttle Columbia's aft flight deck. It was photographed with a 35mm camera by astronaut Jeffrey A. Hoffman, mission specialist, who called the cluster a "camera forest." The seven STS-35 crewmembers trained to record a wide variety of imagery with an equally broad range of equipment. In addition to cameras, a spot meter, film, a pair of binoculars, a bracket, lenses, lens cleaner and other photographic equipment are in the scene. Clouds over ocean waters are framed by an aft flight deck window at upper right.

STS061-98-050 (9 Dec 1993) --- Astronaut F. Story Musgrave, anchored on the end of the Remote Manipulator System (RMS) arm, prepares to be elevated to the top of the towering Hubble Space Telescope (HST) to install protective covers on magnetometers. Astronaut Jeffrey A. Hoffman (bottom of frame) assisted Musgrave with final servicing tasks on the telescope, wrapping up five days of extravehicular activities (EVA).

S93-35696 (7 June 1993) --- Making use of the air-bearing floor in Johnson Space Center's (JSC) Shuttle Mockup and Integration Laboratory, astronaut Jeffrey A. Hoffman practices working with the Hubble Space Telescope's (HST) Wide Field/Planetary Camera (WF/PC). Hoffman is one of four mission specialists who will participate in HST servicing on the scheduled December mission. Changing out the large camera is one of several chores to be performed by the four. Photo credit: NASA

NASA Administrator Charles F. Bolden looks on as Kalani Brown, 9, of Arlington, Va., looks at the moon through a telescope during a stargazing event at Hoffman-Boston Elementary School in Arlington, Va. on Thursday, Nov. 7, 2013. Photo Credit: (NASA/Jay Westcott)

U.S. Vice President Mike Pence, his wife Karen, and their daughter Charlotte are shown how to send a command to the Curiosity rover on Mars by Mars Curiosity Mission ACE Walt Hoffman during a tour of NASA's Jet Propulsion Laboratory, Saturday, April 28, 2018 in Pasadena, California. Hoffman asked Charlotte Pence if she would do the honors of sending the command to the rover. Photo Credit: (NASA/Bill Ingalls)

STS035-10-005 (2-10 Dec 1990) --- STS-35 Mission Specialist (MS) Jeffrey A. Hoffman (front) and Pilot Guy S. Gardner, holding Development Test Objective (DTO) 634 trash compactor handles to the ceiling, "commute" to work on the middeck of Columbia, Orbiter Vehicle (OV) 102. Just below Hoffman's right elbow in locker MF43G DTO 634, Trash Compaction and Retention System Demonstration, trash compactor with a geared mechanism that allows manual compaction of wet and dry trash is visible. Also in the view are the stowed treadmill on the middeck floor and the starboard side sleep station.

STS061-77-094 (7 Dec 1993) --- Astronaut Jeffrey A. Hoffman, anchored to the end of the Remote Manipulator System (RMS) arm, prepares to stow the Wide Field\Planetary Camera (WF\PC I) for the Hubble Space Telescope (HST), during their extravehicular activity (EVA). Astronaut F. Story Musgrave, stationed at the stowage area at bottom of frame, assists. WF/PC II is in place on the HST.

STS061-102-010 (9 Dec 1993) --- Astronauts Jeffrey A. Hoffman (left) and F. Story Musgrave team to replace one of two Solar Array Drive Electronics (SADE) units on the Hubble Space Telescope (HST). Musgrave is standing on a foot restraint mounted on the end of the Space Shuttle Endeavour's Remote Manipulator System (RMS) arm. The black object, in upper left corner, is part of the window frame, through which this 70mm frame was exposed, inside Endeavour's cabin.

STS061-48-001 (9 Dec 1993) --- Orbiting Earth at an altitude of 356 nautical miles perched atop a foot restraint on the Space Shuttle Endeavour's Remote Manipulator System (RMS) arm, astronauts F. Story Musgrave (top) and Jeffrey A. Hoffman wrap up the final of five Extravehicular Activities (EVA). The west coast of Australia forms the backdrop for the 35mm frame.

Making use of the air-bearing floor in JSC's Shuttle mockup and integration laboratory, Astronaut Jeffrey A. Hoffman practices working with the Hubble Space Telescope's Wide Field/Planetary Camera (WF/PC). Changing out the large camera is one of several jobs to be performed by STS-61.

Making use of the air-bearing floor in JSC's Shuttle mockup and integration laboratory, Astronaut Jeffrey A. Hoffman practices working with the Hubble Space Telescope's Wide Field/Planetary Camera (WF/PC). Changing out the large camera is one of several jobs to be performed by STS-61.

Astronauts Jeffrey A. Hoffman (far left) and F. Story Musgrave (second left) monitor a training session from consoles in the control room for the Neutral Buoyancy Simulator (NBS) at the Marshall Space Flight Center (MSFC). Seen underwater in the NBS on the big screen and the monitors at the consoles is astronaut Thomas D. Akers. The three mission specialists, along with astronaut Kathryn C. Thornton, are scheduled to be involved in a total of five sessions of extravehicular activity (EVA) to service the Hubble Space Telescope (HST) in orbit during the STS-61 mission, scheduled for December 1993.

S61-E-018 (6 Dec 1993) --- Astronaut Jeffrey A. Hoffman, anchored to a foot restraint on the end of the Remote Manipulator System (RMS) arm, inserts the new Wide Field/Planetary Camera (WFPC-II) into its place on the Hubble Space Telescope (HST). Astronaut F. Story Musgrave, who shared the duties of replacing the camera, is partially visible at right edge of frame. Electronic still photography is a relatively new technology which provides the means for a handheld camera to electronically capture and digitize an image with resolution approaching film quality. The electronic still camera has flown as an experiment on several other shuttle missions.

STS061-77-102 (7 Dec 1993) --- Astronauts Jeffrey A. Hoffman (left) and F. Story Musgrave are partially silhouetted against the Indian Ocean as they work to install the Magnetic Sensing System (MSS) on the Hubble Space Telescope (HST). Musgrave is anchored to the end of the Space Shuttle Endeavour's Remote Manipulator System (RMS) arm. The HST is positioned along the southern end of Madagascar, 325 nautical miles away. Visible on the western coast are the sediment laden Onilahy and Fiherenana Rivers which empty into Saint Augustin Bay. North of Fiherenana River is the Mangoky River. The circular feature on the southern end of Madagascar and to the right of HST is the L'ivakoany Mountains. The eastern coast is relatively straight compared to the western coast.

S97-00573 (8 Jan 1997) --- In the new Neutral Buoyancy Laboratory (NBL) at the Sonny Carter Training Center Facility, one of the STS-82 astronauts and an instructor practice procedures to be used during four scheduled space walks to service the Hubble Space Telescope (HST). At present, four sessions of Extravehicular Activity (EVA), are planned, using two pairs of astronauts on alternating days. Mark C. Lee, payload commander, will work with Steven L. Smith, while Gregory J. Harbaugh will team with Joseph R. Tanner. Astronaut Jeffrey A. Hoffman, who performed three EVA?s on the initial HST-servicing mission, helped to train the astronauts.

S97-00569 (8 Jan 1997) --- In the new Neutral Buoyancy Laboratory (NBL) at the Sonny Carter Training Center Facility, one of the STS-82 astronauts and an instructor practice procedures to be used during four scheduled space walks to service the Hubble Space Telescope (HST). At present, four sessions of Extravehicular Activity (EVA), are planned, using two pairs of astronauts on alternating days. Mark C. Lee, payload commander, will work with Steven L. Smith, while Gregory J. Harbaugh will team with Joseph R. Tanner. Astronaut Jeffrey A. Hoffman, who performed three EVA?s on the initial HST-servicing mission, helped to train the astronauts.

U.S. Vice President Mike Pence, his wife Karen, and their daughter Charlotte shake hands with Mars Curiosity Mission ACE Walt Hoffman, right, during a tour of NASA's Jet Propulsion Laboratory, Saturday, April 28, 2018 in Pasadena, California. Photo Credit: (NASA/Bill Ingalls)

NASA's Jet Propulsion Laboratory InSight project manager Tom Hoffman gives remarks during a media briefing regarding the NASA InSight Mars Lander (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport), Wednesday, Oct. 31, 2018 at NASA Headquarters in Washington. InSIght will land on the Red Planet at approximately 3 p.m. EST (noon PST) Monday, Nov. 26. InSight will study the deep interior of Mars to learn how all celestial bodies with rocky surfaces, including Earth and the Moon, formed. The lander’s instruments include a seismometer to detect marsquakes and a probe to monitor the flow of heat in the planet's subsurface. Photo Credit: (NASA/Bill Ingalls)

The crew assigned to the STS-51D mission included (front left to right) Karol J. Bobko, commander; Donald E. Williams, pilot; M. Rhea Seddon, mission specialist; and Jeffrey A. Hoffman, mission specialist. On the back row, left to right, are S. David Griggs, mission specialist; and payload specialists Charles D. Walker, and E. Jake Garn (Republican Utah Senator). Launched aboard the Space Shuttle Discovery on April 12, 1985 at 8:59:05 am (EST), the STS-51D mission’s primary payloads were the TELESAT-1 (ANIK-C) communications satellite and the SYNCOM IV-3 (also known as LEASAT-3).

NASA's Jet Propulsion Laboratory InSight project manager Tom Hoffman gives remarks during a NASA InSight Mars Lander (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) media briefing, Wednesday, Oct. 31, 2018 at NASA Headquarters in Washington. InSIght will land on the Red Planet at approximately 3 p.m. EST (noon PST) Monday, Nov. 26. InSight will study the deep interior of Mars to learn how all celestial bodies with rocky surfaces, including Earth and the Moon, formed. The lander’s instruments include a seismometer to detect marsquakes and a probe to monitor the flow of heat in the planet's subsurface. Photo Credit: (NASA/Bill Ingalls)

Astronauts included in the STS-61 crew portrait include (standing in rear left to right) Richard O. Covey, commander; and mission specialists Jeffrey A. Hoffman, and Thomas D. Akers. Seated left to right are Kenneth D. Bowersox, pilot; Kathryn C. Thornton, mission specialist; F. Story Musgrave, payload commander; and Claude Nicollier, mission specialist. Launched aboard the Space Shuttle Endeavor on December 2, 1993 at 4:27:00 am (EST), the STS-61 mission was the first Hubble Space Telescope (HST) servicing mission, and the last mission of 1993.

NASA's Jet Propulsion Laboratory InSight project manager Tom Hoffman gives remarks during a NASA InSight Mars Lander (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) media briefing, Wednesday, Oct. 31, 2018 at NASA Headquarters in Washington. InSIght will land on the Red Planet at approximately 3 p.m. EST (noon PST) Monday, Nov. 26. InSight will study the deep interior of Mars to learn how all celestial bodies with rocky surfaces, including Earth and the Moon, formed. The lander’s instruments include a seismometer to detect marsquakes and a probe to monitor the flow of heat in the planet's subsurface. Photo Credit: (NASA/Bill Ingalls)

Tom Hoffman, InSight Project Manager, NASA JPL, left, and Bruce Banerdt, InSight Principal Investigator, NASA JPL, describe the first image sent back by the Mars InSight lander during a post-landing press conference, Monday, Nov. 26, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

Tom Hoffman, InSight Project Manager, NASA JPL reacts to the first image to be seen from the Mars InSight lander shortly after confirmation of a successful touch down on the surface of Mars, Monday, Nov. 26, 2018 inside the Mission Support Area at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

Tom Hoffman, InSight Project Manager, NASA JPL, center, talks with other Mars InSight team members during a post-landing press conference, Monday, Nov. 26, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

Astronaut Jeffrey Hoffman removes the Wide Field and Planetary Camera 1 (WFPC 1) during the first Hubble servicing mission (SM1), which took place in December, 1993. https://photojournal.jpl.nasa.gov/catalog/PIA22574

Astronauts Jeffrey Hoffman and Story Musgrave install the Wide Field and Planetary Camera 2 (WFPC2) on the Hubble Space Telescope, during SM1 in December, 1993. https://photojournal.jpl.nasa.gov/catalog/PIA22911

S61-E-017 (6 Dec 1993) --- Astronaut F. Story Musgrave uses one of the handrails on the Hubble Space Telescope (HST) during the second of his three sessions of STS-61 extravehicular activity (EVA-3). Astronauts Musgrave and Jeffrey A. Hoffman used this particular EVA to change out the Wide Field/Planetary Camera (WF/PC) and two magnetometers (also known as magnetic sensing systems). The photo was recorded with the Electronic Still Camera (ESC) inside Endeavour's cabin. Electronic still photography is a relatively new technology which provides the means for a handheld camera to electronically capture and digitize an image with resolution approaching film quality. The electronic still camera has flown as an experiment on several other shuttle missions.

S97-00588 (8 Jan 1997) --- In the new Neutral Buoyancy Laboratory (NBL) at the Sonny Carter Training Center Facility, astronaut Mark C. Lee (obscured by bubbles at center) and an instructor practice procedures to be used during four scheduled space walks to service the Hubble Space Telescope (HST). At present, four sessions of Extravehicular Activity (EVA), are planned, using two pairs of astronauts on alternating days. Lee, payload commander, will work with Steven L. Smith, while Gregory J. Harbaugh will team with Joseph R. Tanner. Astronaut Jeffrey A. Hoffman (wearing space suit, center frame) who performed three EVA?s on the initial HST-servicing mission, helped to train the astronauts.

Tom Hoffman, InSight Project Manager, NASA JPL, gives a high-five to other Mars InSight team members after receiving confirmation that the Mars InSight lander successfully touched down on the surface of Mars, Monday, Nov. 26, 2018 inside the Mission Support Area at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

Tom Hoffman, InSight Project Manager, NASA JPL talks about the Mars InSight landing site during a pre-landing briefing, Sunday, Nov. 25, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. InSight is scheduled to touch down on the Red Planet at approximately noon PST (3 p.m. EST) on Nov. 26. Photo Credit: (NASA/Bill Ingalls)

Tom Hoffman, InSight Project Manager, NASA JPL, talks about the Mars InSight during a pre-landing briefing, Sunday, Nov. 25, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. InSight is scheduled to touch down on the Red Planet at approximately noon PST (3 p.m. EST) on Nov. 26. Photo Credit: (NASA/Bill Ingalls)

Tom Hoffman, InSight Project Manager, NASA JPL talks about the Mars InSight during a pre-landing briefing, Sunday, Nov. 25, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. InSight is scheduled to touch down on the Red Planet at approximately noon PST (3 p.m. EST) on Nov. 26. Photo Credit: (NASA/Bill Ingalls)

Tom Hoffman, InSight project manager, NASA JPL, right, discusses NASA's InSight mission during a prelaunch media briefing, Thursday, May 3, 2018, at Vandenberg Air Force Base in California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

U.S. Vice President Mike Pence, 3rd from left, his wife Karen, and their daughter Charlotte meet with JPL Director Michael Watkins, and Mars Curiosity Mission ACE Walt Hoffman, right, during a tour of NASA's Jet Propulsion Laboratory, Saturday, April 28, 2018 in Pasadena, California. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Jim Bridenstine, left, JPL Director Michael Watkins, InSight Project Manager Tom Hoffman, InSight Principal Investigator Bruce Banerdt, MarCO chief engineer Andy Klesh, and InSight Instrument Operations Lead Elizabeth Barrett, give a Mars InSight post-landing press conference, Monday, Nov. 26, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

Tom Hoffman, InSight Project Manager, NASA JPL, left, and Sue Smrekar, InSight deputy principal investigator, NASA JPL, react after receiving confirmation that the Mars InSight lander successfully touched down on the surface of Mars, Monday, Nov. 26, 2018 inside the Mission Support Area at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

Tom Hoffman, InSight Project Manager, NASA JPL, left, and Bruce Banerdt, InSight Principal Investigator, NASA JPL, laugh together after reviewing the first image of Mars taken by the Mars InSight lander, Monday, Nov. 26, 2018 inside the Mission Support Area at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

Bruce Banerdt, InSight Principal Investigator, NASA JPL, center left, and Tom Hoffman, InSight Project Manager, NASA JPL, rejoice after receiving confirmation that the Mars InSight lander successfully touched down on the surface of Mars, Monday, Nov. 26, 2018 inside the Mission Support Area at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Jim Bridenstine, left, JPL Director Michael Watkins, InSight Project Manager Tom Hoffman, InSight Principal Investigator Bruce Banerdt, MarCO chief engineer Andy Klesh, and InSight Instrument Operations Lead Elizabeth Barrett, answer questions during a Mars InSight post-landing press conference, Monday, Nov. 26, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

Tom Hoffman, InSight Project Manager, NASA JPL, left, listens as Julie Wertz-Chen, Entry, Descent and Landing systems engineer, NASA JPL, talks about Mars InSight from the Mission Control Area during a pre-landing briefing, Sunday, Nov. 25, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. InSight is scheduled to touch down on the Red Planet at approximately noon PST (3 p.m. EST) on Nov. 26. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Jim Bridenstine, left, JPL Director Michael Watkins, InSight Project Manager Tom Hoffman, InSight Principal Investigator Bruce Banerdt, MarCO chief engineer Andy Klesh, and InSight Instrument Operations Lead Elizabeth Barrett, celebrate Mars InSight landing successfully on Mars during a press conference, Monday, Nov. 26, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

This montage consists of 8 individual STS-35 crew member portraits surrounding the mission’s insignia. Starting from top center, clockwise, are Vance D. Brand, commander; mission specialists Dr. Robert A. R. Parker, John M. (Mike) Lounge, and Dr. Jeffery A. Hoffman; Colonel Guy S. Gardner, pilot; and payload specialists Dr. Kenneth H. Nordsieck, Dr. Samual T. Durrance, and Dr. Ronald A. Parise. The crew of 8 launched aboard the Space Shuttle Orbiter Columbia on December 2, 1990 at 1:19:01am (EST). The primary objective of the mission was round the clock observation of the celestial sphere in ultrviolet and X-Ray astronomy with the Astro-1 observatory which consisted of four telescopes: the Hopkins Ultraviolet Telescope (HUT); the Wisconsin Ultraviolet Photo-Polarimeter Experiment (WUPPE); the Ultraviolet Imaging Telescope (UIT); and the Broad Band X-Ray Telescope (BBXRT). Due to loss of data used for pointing and operating the ultraviolet telescopes, Marshall Space Flight Center ground teams were forced to aim the telescopes with fine tuning by the flight crew.

Astronaut Jeff Hoffman conducts Hubble Space Telescope training in Marshall's Neutral Buoyancy Simulator (NBS)

Astronauts Jeffrey Hoffman and David Griggs in Egress Training. 1. STS-51E - CREW TRAINING JSC, Houston, Texas

Stu Spath, InSight program manager, Lockheed Martin Space, left, and Tom Hoffman, InSight project manager, NASA JPL, discuss NASA's InSight mission during a prelaunch media briefing, Thursday, May 3, 2018, at Vandenberg Air Force Base in California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, Ed Hoffman and Annie Caraccio discuss the 'Young Professional's Perspective at NASA' during the final day of a weeklong series called 'Masters with Masters.' Hoffman, NASA's chief Knowledge officer, and Caraccio, a chemical engineer in the Engineering and Technology Directorate at Kennedy, were joined by Philip Harris, an International Operations engineer from the Johnson Space Center via a television link with NASA's office in Moscow. Photo credit: NASA_Jim Grossmann

CAPE CANAVERAL, Fla. – Ed Hoffman, from left, Jack Fox and Rob Mueller discuss techniques to enable and enhance innovation during the third session in a weeklong series called "Masters with Masters" at the agency's Kennedy Space Center in Florida. Hoffman, NASA's chief Knowledge officer, Fox, chief, Surface Systems Office, and Rob Mueller, senior technologist, Surface Systems Office, talked about the work of the Swamp Works facility at Kennedy. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Ed Hoffman, from left, Jack Fox and Rob Mueller discuss techniques to enable and enhance innovation during the third session in a weeklong series called "Masters with Masters" at the agency's Kennedy Space Center in Florida. Hoffman, NASA's chief Knowledge officer, Fox, chief, Surface Systems Office, and Rob Mueller, senior technologist, Surface Systems Office, talked about the work of the Swamp Works facility at Kennedy. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Ed Hoffman and Lisa Colloredo discuss NASA's Commercial Crew Program during the first of a weeklong series called 'Masters with Masters' at the agency's Kennedy Space Center in Florida. Hoffman, NASA's chief Knowledge officer, and Colloredo, associate program manager at Kennedy, were joined by phone by Ed Mango, program manager for CCP. Photo credit: NASA_Jim Grossmann

CAPE CANAVERAL, Fla. – Ed Hoffman and Lisa Colloredo discuss NASA's Commercial Crew Program during the first of a weeklong series called 'Masters with Masters' at the agency's Kennedy Space Center in Florida. Hoffman, NASA's chief Knowledge officer, and Colloredo, associate program manager at Kennedy, were joined by phone by Ed Mango, program manager for CCP. Photo credit: NASA_Jim Grossmann

CAPE CANAVERAL, Fla. – Ed Hoffman and Lisa Colloredo discuss NASA's Commercial Crew Program during the first of a weeklong series called 'Masters with Masters' at the agency's Kennedy Space Center in Florida. Hoffman, NASA's chief Knowledge officer, and Colloredo, associate program manager at Kennedy, were joined by phone by Ed Mango, program manager for CCP. Photo credit: NASA_Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, Ed Hoffman and Annie Caraccio discuss the 'Young Professional's Perspective at NASA' during the final day of a weeklong series called 'Masters with Masters.' Hoffman, NASA's chief Knowledge officer, and Caraccio, a chemical engineer in the Engineering and Technology Directorate at Kennedy, were joined by Philip Harris, an International Operations engineer from the Johnson Space Center via a television link with NASA's office in Moscow. Photo credit: NASA_Jim Grossmann

CAPE CANAVERAL, Fla. – Ed Hoffman, from left, Bob Sieck and Bob Cabana discuss techniques to handle a transition era during the second session in a weeklong series called "Masters with Masters" at the agency's Kennedy Space Center in Florida. Hoffman, NASA's chief Knowledge officer, Sieck, a former space shuttle launch director, and Cabana, the director of Kennedy, focused on the transition from Apollo to the shuttle and the current transition under way following the shuttle fleet's retirement. Photo credit: NASA/Jim Grossmann

STS035-15-035 (2-10 Dec 1990) --- STS-35 crewmembers perform a microgravity experiment using their drinking water while on the middeck of Columbia, Orbiter Vehicle (OV) 102. Mission Specialist (MS) Jeffrey A. Hoffman (left) has released some water from a drinking container which he holds in his hand. MS John M. Lounge (wearing glasses, center) and Payload Specialist Samuel T. Durrance along with Hoffman study the changing shape and movement of the sphere of water.

CAPE CANAVERAL, Fla. – Ed Hoffman and Lisa Colloredo discuss NASA's Commercial Crew Program during the first of a weeklong series called 'Masters with Masters' at the agency's Kennedy Space Center in Florida. Hoffman, NASA's chief Knowledge officer, and Colloredo, associate program manager at Kennedy, were joined by phone by Ed Mango, program manager for CCP. Photo credit: NASA_Jim Grossmann

CAPE CANAVERAL, Fla. – Ed Hoffman, from left, Bob Sieck and Bob Cabana discuss techniques to handle a transition era during the second session in a weeklong series called "Masters with Masters" at the agency's Kennedy Space Center in Florida. Hoffman, NASA's chief Knowledge officer, Sieck, a former space shuttle launch director, and Cabana, the director of Kennedy, focused on the transition from Apollo to the shuttle and the current transition under way following the shuttle fleet's retirement. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Ed Hoffman, from left, Bob Sieck and Bob Cabana discuss techniques to handle a transition era during the second session in a weeklong series called "Masters with Masters" at the agency's Kennedy Space Center in Florida. Hoffman, NASA's chief Knowledge officer, Sieck, a former space shuttle launch director, and Cabana, the director of Kennedy, focused on the transition from Apollo to the shuttle and the current transition under way following the shuttle fleet's retirement. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, Ed Hoffman and Annie Caraccio discuss the 'Young Professional's Perspective at NASA' during the final day of a weeklong series called 'Masters with Masters.' Hoffman is NASA's chief Knowledge officer and Caraccio is a chemical engineer in the agency's Engineering and Technology Directorate at Kennedy. Photo credit: NASA_Jim Grossmann

CAPE CANAVERAL, Fla. – Ed Hoffman, from left, Bob Sieck and Bob Cabana discuss techniques to handle a transition era during the second session in a weeklong series called "Masters with Masters" at the agency's Kennedy Space Center in Florida. Hoffman, NASA's chief Knowledge officer, Sieck, a former space shuttle launch director, and Cabana, the director of Kennedy, focused on the transition from Apollo to the shuttle and the current transition under way following the shuttle fleet's retirement. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Ed Hoffman and Lisa Colloredo discuss NASA's Commercial Crew Program during the first of a weeklong series called 'Masters with Masters' at the agency's Kennedy Space Center in Florida. Hoffman, NASA's chief Knowledge officer, and Colloredo, associate program manager at Kennedy, were joined by phone by Ed Mango, program manager for CCP. Photo credit: NASA_Jim Grossmann

From left to right: Bruce Banerdt, InSight Principal Investigator, NASA JPL; Tom Hoffman, InSight Project Manager, NASA JPL; Brian Clement, Planetary Protection lead for MarCO, NASA JPL; Thomas Zurbuchen, Associate Administrator of NASA’s Science Mission Directorate, NASA Headquarters; and Julie Wertz-Chen, Entry, Descent and Landing systems engineer, NASA JPL, talk about Mars InSight and Mars Cube One (MarCO) during a pre-landing briefing, Sunday, Nov. 25, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. InSight is scheduled to touch down on the Red Planet at approximately noon PST (3 p.m. EST) on Nov. 26. Photo Credit: (NASA/Bill Ingalls)

From left to right: Bruce Banerdt, InSight Principal Investigator, NASA JPL; Tom Hoffman, InSight Project Manager, NASA JPL; Brian Clement, Planetary Protection lead for MarCO, NASA JPL; Thomas Zurbuchen, Associate Administrator of NASA’s Science Mission Directorate, NASA Headquarters; and Julie Wertz-Chen, Entry, Descent and Landing systems engineer, NASA JPL, talk about Mars InSight and Mars Cube One (MarCO) during a pre-landing briefing, Sunday, Nov. 25, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. InSight is scheduled to touch down on the Red Planet at approximately noon PST (3 p.m. EST) on Nov. 26. Photo Credit: (NASA/Bill Ingalls)

From left to right: Bruce Banerdt, InSight Principal Investigator, NASA JPL; Tom Hoffman, InSight Project Manager, NASA JPL; Brian Clement, Planetary Protection lead for MarCO, NASA JPL; Thomas Zurbuchen, Associate Administrator of NASA’s Science Mission Directorate, NASA Headquarters; and Julie Wertz-Chen, Entry, Descent and Landing systems engineer, NASA JPL, talk about Mars InSight and Mars Cube One (MarCO) during a pre-landing briefing, Sunday, Nov. 25, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. InSight is scheduled to touch down on the Red Planet at approximately noon PST (3 p.m. EST) on Nov. 26. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Jim Bridenstine, left, JPL Director Michael Watkins, InSight Project Manager Tom Hoffman, InSight Principal Investigator Bruce Banerdt, MarCO chief engineer Andy Klesh, and InSight Instrument Operations Lead Elizabeth Barrett, listen to comments given by the International Space Station crew during a Mars InSight post-landing press conference, Monday, Nov. 26, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Jim Bridenstine, left, JPL Director Michael Watkins, InSight Project Manager Tom Hoffman, InSight Principal Investigator Bruce Banerdt, MarCO chief engineer Andy Klesh, and InSight Instrument Operations Lead Elizabeth Barrett, show an image of Mars made by one of the Mars Cube One CubeSats during a Mars InSight post-landing press conference, Monday, Nov. 26, 2018 at NASA's Jet Propulsion Laboratory in Pasadena, California. InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to study the "inner space" of Mars: its crust, mantle, and core. Photo Credit: (NASA/Bill Ingalls)

Astronauts David Griggs and Jeffrey Hoffman in Egress Training. 1. ASTRONAUT GRIGGS, DAVID - STS-51E 2. STS-51E - CREW TRAINING JSC, HOUSTON, TX

STS 51-E crew is briefed on the Shuttle full fuselage trainer. Astronauts Dave Griggs (foreground), Jean Loup Chretien (behind Griggs) and Jeff Hoffman are being shown the workings of the trainer by flight instructors.

STS-51E Crewman Jeff Hoffman in 1-G Trainer with Space Experiment toys and camera, 01/17/1985, . 1. STS-51E - EXPERIMENTS (TOYS) JSC, HOUSTON, TX Also available in 35 B&W

NASA Administrator Charles F. Bolden gestures while making remarks before a stargazing event at Hoffman-Boston Elementary School in Arlington, Va. on Thursday, Nov. 7, 2013. Photo Credit: (NASA/Jay Westcott)

STS-51E Crewman Jeff Hoffman in 1-G Trainer with space experiment toys and camera, 01/17/1985, . 1. STS-51E - EXPERIMENTS (TOYS) JSC, HOUSTON, TX Also available in 35 B&W

Astronaut Story Musgrave, anchored to the end of the remote manipulator arm, prepares to be elevated to the top of the towering Hubble Space Telescope (HST) to install protective covers on magnetometers. Astornaut Jeffrey Hoffman assisted Musgrave with the final servicing tasks.

NASA Administrator Charles F. Bolden gestures while making remarks at a stargazing event at Hoffman-Boston Elementary School in Arlington, Va. on Thursday, Nov. 7, 2013. Photo Credit: (NASA/Jay Westcott)

STS061-S-002 (1 Oct. 1993) --- These seven NASA astronauts are currently in training for the Hubble Space Telescope (HST) servicing mission, scheduled for later this year. Astronaut Richard O. Covey, mission commander, is standing at left, with astronaut Kenneth D. Bowersox, pilot, seated at left. The five mission specialists for the mission are (left to right, seated) astronauts Kathryn C. Thornton and F. Story Musgrave, and the European Space Agency (ESA) astronaut Claude Nicollier; and (left to right, standing), astronauts Jeffrey A. Hoffman and Thomas D. Akers. Musgrave, Akers, Thornton and Hoffman are all assigned to participate in five total sessions of extravehicular activity (EVA) for the servicing tasks.

S90-38029 (21 May 1990) --- STS-35 Columbia, Orbiter Vehicle (OV) 102, crewmembers commander Vance D. Brand, pilot Guy S. Gardner, mission specialists Jeffrey A. Hoffman, John M. Lounge, Robert A. R. Parker, payload specialists Samuel T. Durrance and Ronald A. Parise and backup payload specialist Kenneth Nordsieck take a break from training activities and pose on the 195-Floor Level on Launch Pad 39A at the Kennedy Space Center (KSC). On left from front to back are Brand, Parise, Lounge and Gardner and on right from front to back are Parker, Nordsieck, and Hoffman. View provided by KSC with alternate number KSC-90PC-670.

S93-33104 (7 Apr 1993) --- Wearing a training version of Space Shuttle Extravehicular Mobility Unit (EMU), astronaut Jeffrey A. Hoffman uses the giant pool of the Johnson Space Center's (JSC) Weightless Environment Training Facility (WET-F) to rehearse for the Hubble Space Telescope (HST) repair mission. Out of frame is astronaut F. Story Musgrave, who will join Hoffman in STS-61 EVA. The hand at top frame belongs to a SCUBA-equipped diver. A number of divers are on hand for all training sessions in the WET-F. A total of five extravehicular activity (EVA) sessions will be conducted during the scheduled December mission of the Endeavour.

STS046-33-028 (4 Aug. 1992) --- With the possibility of an extravehicular activity (EVA) being added to the agenda, the two EVA-trained crew members begin their "pre-breathe" period on the space shuttle Atlantis' flight deck. Astronauts Jeffrey A. Hoffman (left), payload commander, and Franklin R. Chang-Diaz, mission specialist, reported to this station and began the "pre-breathe" process when problems developed during the extension of the Tethered Satellite System (TSS). When the human body is exposed to a sudden decrease in atmospheric pressure (for instance, from the 10.2 ppsi in the crew cabin to the 4.5 ppsi of the Extravehicular Mobility Unit (EMU) spacesuit), nitrogen traces in the bloodstream will expand. This expansion can create tiny bubbles and potential for the "bends". In order to lessen the effect, an astronaut must "pre-breathe" pure oxygen (the same pure oxygen that he will breathe in the suit) to help "purge" nitrogen from his/her bloodstream before exerting him/herself in the low-pressure environment of the suit. The "pre-breathe" exercise and the EVA turned out to be not needed as the TSS operations were resumed by remote operations.

NASA's Jet Propulsion Laboratory InSight instrument deployment lead Jaime Singer, on screen, NASA's Jet Propulsion Laboratory InSight deputy principal investigator Sue Smrekar, left, NASA's Jet Propulsion Laboratory InSight principal investigator Bruce Banerdt, NASA's Jet Propulsion Laboratory InSight project manager Tom Hoffman, and NASA Headquarters acting director of the Planetary Science Division Lori Glaze, right, discuss the NASA InSight Mars Lander (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) during media briefing, Wednesday, Oct. 31, 2018 at NASA Headquarters in Washington. InSIght will land on the Red Planet at approximately 3 p.m. EST (noon PST) Monday, Nov. 26. InSight will study the deep interior of Mars to learn how all celestial bodies with rocky surfaces, including Earth and the Moon, formed. The lander’s instruments include a seismometer to detect marsquakes and a probe to monitor the flow of heat in the planet's subsurface. Photo Credit: (NASA/Bill Ingalls)

STS061-65-009 (2-13 Dec 1993) --- Astronaut Jeffrey A. Hoffman is reflected in the helmet visor of F. Story Musgrave as he photographs the veteran astronaut during one of the pair's three-shared extravehicular activity?s (EVA).

Joseph Fanelli, at the Integrated Communications Officer console, monitors the televised activity of Astronauts Story Musgrave and Jeffrey A. Hoffman. The vetern astronauts were performing the first extravehicular activity (EVA-1) of the STS-61 Hubble Space Telescope (HST) servicing mission.