Space Disasters & Daring Missions

A CAPCOM at Mission Control hears Challenger break apart - can the astronaut who once flew that orbiter fix the safety failures before they repeat? The CAPCOM Headset That Could Have Stopped Challenger-Seventy-Three Seconds In this episode, we follow Frederick Drew Gregory’s path from combat rescue pilot to astronaut to the CAPCOM console where he heard Challenger’s disaster in real time. We trace how that seventy‑three‑second loss propelled him into leading NASA’s safety office and ask what choices he made next. Person: Frederick Drew Gregory Event: Challenger breakup, 73 seconds after launch Date: January 28, 1986 Role: CAPCOM at Mission Control; former Challenger pilot - Flew 550 combat rescue missions in Vietnam across more than fifty aircraft types before joining NASA. - Nephew of Charles Richard Drew, who developed wartime blood banking systems; family built institutions in education and medicine. - Selected as an astronaut candidate in 1978 at age 37 with 7,000 flight hours; first shuttle flight aboard Challenger in April 1985. - On January 28, 1986, he was on duty at the CAPCOM console and heard the Challenger break apart in real time. - Instead of leaving NASA, he stayed and was later appointed to lead the newly created Office of Safety and Mission Control.

A shuttle crew sends an Orbiter Boom to scan Discovery's heat shield - can the inspection finish before reentry? The Orbiter Boom found gap fillers - could they land in time? In this episode, we follow Discovery's Return to Flight mission as the crew uses the newly built Orbiter Boom Sensor System to inspect the orbiter after foam shed from the external tank. The episode covers the launch anomalies, the inspection procedures and the discovery of gap fillers - the question is whether the team can assess and act fast enough to protect reentry. Mission: STS-114 Date: July 26, 2005 (launch); August 1, 2005 (boom deployment) Person: Commander Eileen Collins; Mission Specialist Stephen K. Robinson; Soichi Noguchi Location: Space Shuttle Discovery; external tank (PAL ramp); orbiter underside Tool: Orbiter Boom Sensor System (50-foot boom with visual and laser range imager) - Launch reached orbit after a scrubbed attempt on July 13 and a T‑0 liftoff at 10:39 on July 26, 2005, following 907 days of grounding after Columbia. - Cameras and sensors were increased across the stack; at 127 seconds a 36×11×6.7 inch foam piece detached from the PAL ramp but did not strike Discovery. - NASA grounded the fleet the next morning while Discovery remained in orbit, shifting the mission focus from ISS supply to in‑space inspection. - On August 1 the crew deployed the 50‑foot Orbiter Boom Sensor System to perform frame‑by‑frame visual and laser mapping of the thermal protection tiles. - During the slow underside survey the team identified two strips of ceramic‑impregnated cloth gap fillers woven into the tile array, prompting new questions about reentry risk.

A physicist reaches out to stop a tumbling satellite two hundred and twelve miles above Earth - did he make it in time? The Man Who Stopped a Tumbling Satellite with His Hands In this episode, we follow NASA’s STS-51A mission as it attempts an unprecedented orbital salvage. The crew faces the challenge of rendezvousing with two dead, tumbling communications satellites and the question becomes: can a human in a spacesuit stop a spinning machine in frictionless vacuum? Person: Joseph Allen Date: November 16, 1984 Event: STS-51A space salvage attempt Location: Low Earth orbit, 212 miles above Earth Case: Recovery of Palapa B-2 and Westar VI - Two communications satellites, Palapa B-2 and Westar VI, misfired their Payload Assist Modules and were stranded in low, useless orbits. - The insurers paid claims and the satellites became the property of insurance companies, but engineers still considered retrieving them. - NASA assigned Discovery’s crew for STS-51A, with Joseph Allen selected as a mission specialist to perform an external capture. - Mission planners had to match altitude, velocity, position, and rotation precisely to rendezvous with a slowly tumbling, unpowered object. - There was no existing procedure or training for manually stopping a rotating satellite in open space; the effort would define a new kind of operation.

Five hours into Apollo 17 a Hasselblad shutter clicked - who aboard pressed it, and did the film make it back intact? The Hasselblad's shutter opened - did the film reach Earth in time? In this episode, we follow the moment a Hasselblad 500 EL on Apollo 17 captured the full disk of Earth and the months of processing and choices that followed. The episode traces the camera, the crew, the film, and the editorial decisions that turned one frame into the image the world remembers - but leaves the key questions unresolved. Person: Eugene Cernan; Ronald Evans; Harrison Schmitt Event: Photograph of full Earth disk from Apollo 17 Camera: Hasselblad 500 EL Film: Kodak SO-368 Date: December 7, 1972 (photo taken five hours and six minutes after launch) - The crew launched December 7, 1972 on Apollo 17, the final crewed lunar mission, aware it was the last flight. - At 29,400 km and with the sun behind them, someone aboard lifted a Hasselblad and exposed one frame for 1/125th of a second. - The Hasselblad was loaded with Kodak SO‑368 film and mounted at a spacecraft window; the original frame showed Antarctica at the top. - Film processing returned in January 1973 with dozens of frames, including frame AS17‑148‑22727 that showed the full illuminated disk centered on Africa. - Technicians rotated, cropped, and color‑adjusted the frame before publication, creating the familiar image now known as The Blue Marble.

Three astronauts race against a four-month clock to send Apollo 8 to the Moon without a lunar module - did they make it in time? The four-month clock that forced Apollo 8 to fly without a lunar module In this episode, we follow the compressed decision-making, technical work, and personal stakes that forced NASA to pivot Apollo 8 from an Earth-orbit test to a lunar mission in four months. What choices, risks, and shortcuts shaped the path to December 1968? Person: Frank Borman Person: Jim Lovell Person: Bill Anders Date: December 1968 Event: Apollo 8 lunar-orbit mission decision - Intelligence that the Soviet Union might launch a crewed lunar flyby in December 1968 compressed NASA’s schedule. - George Low proposed skipping the planned test flight and sending the command module to lunar orbit without a lunar module. - Deke Slayton asked Borman if he wanted the mission; Borman accepted before the question was finished. - Engineers added a redesigned three-second hatch and 1,500 pounds of hardware after the Apollo One fire, affecting mass and testing needs. - Julian Scheer and others began scripting what the crew would say from lunar orbit, including a suggestion to read from the Book of Genesis.

A failed relay box left Hubble silent in orbit while a shuttle crew races to repair it - did the STS-125 servicing mission make it in time? A failed relay box stopped Hubble - and a spare launch bought minutes In this episode, we follow the lead-up to the cancelled-then-reapproved Hubble servicing mission and the tense months that followed. It covers the technical, political, and procedural choices that brought astronauts back to a telescope circling Earth - and asks how close Hubble truly came to staying silent forever. Person: John Grunsfeld Person: Sean O'Keefe Person: Michael Griffin Event: Science Instrument Command and Data Handling Unit failure Date: September 27, 2008 - Hubble carried a basketball belonging to Edwin Hubble sealed inside the telescope since launch. - After Columbia, NASA required shuttles to reach the International Space Station as a safe haven, a rule incompatible with Hubble’s orbit. - Administrator Sean O’Keefe cancelled the fifth servicing mission in January 2004 because a Telescope to Hubble couldn’t divert to the ISS. - Michael Griffin, O’Keefe’s successor, ordered a review and approved a crewed mission with a second shuttle kept on the pad as a lifeboat. - On September 27, 2008, Hubble’s SCI data handling unit failed, silencing the telescope and forcing a last-minute decision about the already-trained crew.

A Russian-built docking module waits in Atlantis’s payload bay as a five-minute scrub threatens a one-day window to bolt it onto Mir. The five‑minute scrub that stole their one‑day window In this episode, we follow the tense eight days around STS-74 as two former rivals attempt a one-way hardware commitment in orbit. The story covers the launch scrub, the robotic-arm transfer, and the split‑second tolerances that governed every decision - could they meet the one‑day timing and the five‑inch margin? Mission: STS-74 Date: 1995 Location: Atlantis; Mir (200 miles above Earth) Person: Chris Hadfield Event: five-minute launch scrub - Atlantis rolled to Pad 39A with a Russian docking module strapped in the payload bay and a crew trained for thirteen months. - Launch was scrubbed at T‑5 minutes because Atlantic abort landing sites were below weather limits, forcing a 24‑hour slip. - Mir’s Kristall module required a fifteen‑foot extension to move the American docking interface away from Spektr’s solar arrays to avoid shadowing. - Hadfield alone would operate the shuttle’s robotic arm to place the module within a critical five‑inch final gap before docking. - The module was delivered one-way: Atlantis would hand it to Mir, dock to it, and leave the adapter permanently attached.

A Moscow stray is launched into orbit for propaganda; telemetry goes silent - did ground control get to her in time? The stuck rocket stage that trapped heat and killed Laika before dawn In this episode, we follow the compressed, frantic buildup to a rapid Soviet orbital mission and the early hours of a flight monitored by live telemetry. The episode traces the decisions, the hardware, and the window between the recorded data and the public story-what happened during those critical hours? Person: Laika Date: November 3, 1957 Location: Baikonur Cosmodrome / orbit Engineer: Sergei Korolev Veterinarian: Vladimir Yazdovsky - Khrushchev ordered a live launch timed for the November 7 anniversary, giving engineers less than four weeks to prepare. - Korolev proposed a dog capsule because Sputnik 3 wasn’t ready and return technology did not exist. - Laika, a three-year-old Moscow mongrel, was chosen ten days before liftoff for her calm temperament and small size. - The capsule was still being built while Laika was fitted and included oxygen generation, CO2 absorbers, a temperature-activated fan, and gel food. - The Block A core stage failed to separate, compromising thermal insulation and allowing heat to build inside the cabin.

A volunteer sent a thruster command to a decades-old spacecraft and heard only the silence of an empty tank - did they lose their final window? The thruster command that found the tank empty and cost them the window In this episode, we follow the sequence of decisions, maneuvers, and improvisations that kept an aging spacecraft alive and aiming for a comet decades after its launch. What happened when a crowdfunded effort met an empty propellant tank, and could the team still make the window? Person: Robert Farquhar Date: July 8, 2014 Location: L1 halo orbit / lunar flybys Event: Retasking ISEE-3 / ICE for comet science Topic: thruster command, empty nitrogen tank - Engineers and volunteers sent a thruster command into deep space on July 8, 2014 and received a response from the spacecraft. - The spacecraft was spinning at 19.76 rotations per minute while its instruments still broadcast data despite a battery failure decades earlier. - ISEE-3 launched August 12, 1978, settled into a halo orbit at L1 on November 20, 1978, and survived a 1981 battery failure that limited it to sunlight operations. - Robert Farquhar and others planned a sequence of burns and five lunar gravity assists between June 10, 1982 and December 22, 1983 to redirect the probe toward the Moon and beyond. - On September 11, 1985, redesignated ICE, the spacecraft crossed a comet’s plasma tail 7,800 km from the nucleus, returning the first in-situ measurements of a cometary plasma environment.

A paint flake fooled Mariner 4's star sensor into locking the wrong star - can the spacecraft still point its camera at Mars? A paint flake fooled the star sensor - could Mariner 4 make Mars on time? In this episode, we follow the final weeks of the Mariner 4 mission as engineers race against a closing launch window and a ticking clock. The crew at JPL confronts hardware compromises, failed tests, and a navigation system being tricked by debris - but will the spacecraft arrive with its cameras correctly pointed? Mission: Mariner 4 Date: November-December 1964 Location: Jet Propulsion Laboratory / en route to Mars Event: Star sensor failures and navigation challenges Status: Eight-month voyage in progress - Engineers hand-colored the first low-resolution image of Mars by filling numbered squares while the computer finished processing. - Mariner 3 failed on launch when its payload shroud failed to jettison, prompting a three-week crash redesign of the shroud material and tests. - Mariner 4 launched Nov 28, 1964 with a spare tape recorder pressed into service because of time constraints. - The navigation system used Canopus as a single-star reference and began repeatedly acquiring and losing other bright stars during flight. - Paint flakes and dust near the star sensor created false bright points that intermittently fooled the lock algorithm, affecting camera orientation.