The Dead Scientists

Aerospace engineer and former Technical Fellow at Aerojet Rocketdyne (the highest technical rank in the company). Had recently joined NASA's Jet Propulsion Laboratory as Director of the Materials Processing Group. Co-inventor of Mondaloy, a family of nickel-based superalloys now built into engines replacing Russian-made rockets for American national security launches. An Associate Fellow of the American Institute of Aeronautics and Astronautics. Vanished on June 22, 2025, while hiking near Mount Waterman in the Angeles National Forest. Last seen around 9:10 AM waving to a companion on the Upper West Ridge Trail before disappearing. A massive search involving dozens of agencies, helicopters, dogs, and drones found no trace. The case was transferred to the LA County Sheriff's Homicide Bureau: Missing Persons Unit. Her disappearance is connected to the later vanishing of William McCasland through their shared work on the Mondaloy program.

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Retired U.S. Air Force Major General who spent more than three decades in the Air Force. Served as commander of the Air Force Research Laboratory (AFRL), which oversaw roughly $2.2 billion in science and technology programs including advanced propulsion systems, directed energy weapons, aerospace materials, and satellite technologies. His former base, Wright-Patterson AFB in Ohio, is long associated with UFO lore. On February 27, 2026, the 68-year-old vanished from his Albuquerque, New Mexico home. A repairman interacted with him at 10:00 AM; his wife left at 11:10 AM and returned at 12:04 PM to find him gone. He left behind his phone, prescription glasses, and wearable devices, though his gun and wallet are also missing. The FBI has joined local authorities in the search. Infrared helicopter searches of nearby canyons were hampered by unseasonably warm temperatures. McCasland is connected to missing scientist Monica Reza through his oversight of the government-funded Mondaloy superalloy program she co-invented.

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Canadian-born astrophysicist and research scientist at the California Institute of Technology (Caltech) since 1997, affiliated with the Infrared Processing and Analysis Center (IPAC). Recipient of the 2011 NASA Exceptional Scientific Achievement Medal. Studied exoplanets, galactic structure, dark matter, and stellar populations using NASA's Spitzer, Hubble, and WISE telescopes. In 2007, was lead author on a landmark publication capturing light from exoplanets and identifying molecules including water in their atmospheres. Published 147 peer-reviewed papers with over 400 hours of Hubble and Spitzer telescope time as principal investigator. Shot and killed on the front porch of his rural home in Llano, California on February 16, 2026, at approximately 6:00 AM, from a gunshot wound to the torso. Suspect Freddy Snyder, 29, had been arrested two months earlier for trespassing on Grillmair's property while carrying a loaded, unregistered rifle. A judge released Snyder on his own recognizance; prosecutors dropped all firearm charges on February 5. Eleven days later, Grillmair was dead. No motive has been established and investigators say the two men did not know each other.

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Former Director of Los Alamos National Laboratory (2011-2017) and experimental physicist. Killed on September 6, 2024, in a head-on car crash when another driver crossed the center line at 5:15 AM. The driver, Nadia Lopez, 22, was charged with misdemeanors including speeding, careless driving, and failure to maintain lane, but prosecutors found insufficient evidence for vehicular homicide. McMillan had led LANL through major nuclear stockpile stewardship and Mars exploration programs during his tenure as director.

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Former worker at Los Alamos National Laboratory who retired in 2017 after decades of service. On May 4, 2025, the 79-year-old walked out of his home on 37th Street in Los Alamos, New Mexico, and was never seen again. He left behind his wallet, car keys, and cigarettes, and did not carry a cell phone. Despite being 135 pounds and in excellent health for his age, regularly hiking high-altitude trails in Pueblo Canyon, an extensive multi-agency search found absolutely no trace. The case remains open.

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Administrative assistant at Los Alamos National Laboratory who held national security clearances. On June 26, 2025, four days after Monica Reza vanished, the 53-year-old forgot her security badge and decided to work from home. She was last seen on surveillance footage walking eastbound on NM Highway 518 near Talpa, New Mexico, miles from her home, without her phone, wallet, or keys. Her family described this as completely out of character. Reports indicate she had allegedly lost her national security clearance shortly before her disappearance. New Mexico State Police have neither ruled out foul play nor confirmed she left voluntarily.

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NASA Jet Propulsion Laboratory Principal and technical group supervisor who worked at JPL since 1999. Managed development of the SBG-VSWIR instrument for the Surface Biology and Geology mission. In June 2023, was lead researcher on a breakthrough that could help future space missions detect signs of life on other worlds, including Jupiter's moon Europa, Saturn's moon Enceladus, and the dwarf planet Ceres. His cause of death has never been publicly disclosed. No autopsy was performed. No press release from JPL, no memorial statement from NASA, no acknowledgment from Caltech, and no entry in the Los Angeles County Medical Examiner public database. The only public record was an online obituary.

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Portuguese-born plasma physicist who served as the Herman Feshbach Professor of Physics at MIT and Director of the MIT Plasma Science and Fusion Center since 2024. Recipient of the Presidential Early Career Award in January 2025. His research focused on magnetic reconnection, plasma turbulence, and magnetic field generation, with direct relevance to NASA's TRACERS satellite mission. Shot at his residence in Brookline, Massachusetts on December 15, 2025; died the following day at age 47. The shooting was connected to Claudio Manuel Neves Valente, a former classmate from the Instituto Superior Tecnico in Portugal (1995-2000). Valente had carried out a shooting at Brown University two days earlier and was found dead from a self-inflicted gunshot wound on December 19 in a Salem, New Hampshire storage facility. While investigators attribute this to a personal grudge, Loureiro's inclusion in the broader pattern of scientist deaths has drawn public attention.

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Former NASA research scientist at Ames Research Center (Intelligent Systems Division) who earned his PhD in Electrical Engineering from Georgia Tech. Held a NASA fellowship specializing in fault analysis, predicting and reducing the risk of system failures in unmanned aircraft. Published research on Markov modeling of component fault growth for NASA. Left NASA in 2015 to work as a data scientist at Armus Corp. On April 10, 2016, the 30-year-old was walking home from a local bar in Oakland, California at approximately 12:15 AM when he was shot at close range by an unknown individual. A neighbor found him with an earbud in but not connected to a phone. His wallet was NOT stolen despite police characterizing the incident as an attempted robbery. No suspect has ever been identified. The case remains unsolved. The FBI lists Bole on its Seeking Information page with a combined reward of $30,000.

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Computer scientist at NASA Ames Research Center who had just received his PhD from the University of Texas at Austin in December 1996. Moved to California in April 1997 with his wife and 2-year-old twin daughters to work on developing space vehicles capable of monitoring their own conditions (autonomous self-diagnostic systems). On June 12, 1997, the 38-year-old was on his customary evening walk in downtown Palo Alto when he was attacked by members of the True Blue Crips gang from East Palo Alto. He was beaten to death just blocks from the Palo Alto Police Department. Six gang members were arrested; Daniel Tevaga was sentenced to 25 years to life and Olopitoamoa Tapuloa to 15 years to life. The attack appears to have been a random gang assault.

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29-year-old resident of the Llano area, approximately two miles from Carl Grillmair's home. Charged with murder, carjacking (of his own relative), and burglary in connection with Grillmair's killing, with a firearm enhancement. Bail set at $3.175 million. On December 20, 2025, Snyder was arrested for trespassing on Grillmair's property while carrying a loaded, unregistered rifle. A judge released him on his own recognizance with instructions to complete a hunter safety course. By February 5, 2026, prosecutors dropped all firearm charges because Snyder had no prior convictions. Neighbors also reported Snyder broke into a nearby home on December 28, days after his initial release. Eleven days after charges were dropped, Grillmair was found dead. Detectives say the two men did not know each other and no motive has been established.

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Electronics technician and engineer at NASA's Dryden Flight Research Center (now Armstrong Flight Research Center) at Edwards Air Force Base. Responsible for operation and maintenance of the SR-71 flight simulator. On June 23, 2008, the 60-year-old was one of five people murdered at his home in Quartz Hill, California, in the Antelope Valley. His wife's cousin, Jenny Young Park, had moved into the home after divorcing Jae Shim. Park's ex-husband enlisted Steve Kwon to carry out the murders using a baseball bat and samurai sword. The home was also set on fire. Ciganek's wife was the intended target but was at work. Jae Shim was sentenced to life without parole; Steve Kwon received 125 years to life. This was a domestic violence-motivated mass murder, not targeted at Ciganek's NASA work.

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