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Xiaoyi Li Engineers Instruments and the Teams that Get Them Done
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By USH
In 1992, Dr. Gregory Rogers a NASA flight surgeon and former Chief of Aerospace Medicine witnessed an event that would stay with him for more than three decades. Now, after years of silence, he’s finally revealing the details of a 15-minute encounter that shattered everything he thought he knew about aerospace technology.
With a distinguished career that includes support for 31 space shuttle launches, training as an F-16 pilot, and deep involvement in classified aerospace programs, Dr. Rogers brings unmatched credibility to the conversation. His firsthand account of observing what appeared to be a reverse-engineered craft, emblazoned with "U.S. Air Force" markings, raises profound questions about the true timeline of UAP development and disclosure.
The full interview spans nearly two hours. To help navigate the discussion, here’s a timeline so you can jump to the segments that interest you most.
00:00 Introduction and Dr. Rogers' Unprecedented Credentials 07:25 The 1992 Cape Canaveral Encounter Begins 18:45 Inside the Hangar: First Glimpse of the Craft 26:30 "We Got It From Them" - The Shocking Revelation 35:15 Technical Analysis: Impossible Flight Characteristics 43:40 Electromagnetic Discharges and Advanced Propulsion 52:20 The Cover Story and 33 Years of Silence 1:01:10 Why He's Speaking Out Now: Grush and Fravor's Influence 1:08:45 Bob Lazar Connections and Reverse Engineering Timeline 1:17:20 Flight Surgeon Stories: The Human Side of Classified Work 1:25:50 G-Force Brain Injuries: An Unreported Military Crisis 1:34:30 Columbia Disaster: When Safety Warnings Are Ignored 1:43:15 The Bureaucratic Resistance to Truth 1:50:40 Congressional Testimony and The Path Forward 1:58:25 Final Thoughts: Legacy vs. Truth
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By NASA
Earth (ESD) Earth Explore Explore Earth Home Air Quality Climate Change Freshwater Life on Earth Severe Storms Snow and Ice The Global Ocean Science at Work Earth Science at Work Technology and Innovation Powering Business Multimedia Image Collections Videos Data For Researchers About Us 4 min read
NASA-Assisted Scientists Get Bird’s-Eye View of Population Status
Through the eBird citizen scientist program, millions of birders have recorded their observations of different species and submitted checklists to the Cornell Lab of Ornithology. Through a partnership with NASA, the lab has now used this data to model and map bird population trends for nearly 500 North American species.
Led by Alison Johnston of the University of St. Andrews in Scotland, the researchers reported that 75% of bird species in the study are declining at wide-range scales. And yet this study has some good news for birds. The results, published in Science in May, offer insights and projections that could shape the future conservation of the places where birds make their homes.
“This project demonstrates the power of merging in situ data with NASA remote sensing to model biological phenomena that were previously impossible to document,” said Keith Gaddis, NASA’s Biological Diversity and Ecological Forecasting program manager at the agency’s headquarters in Washington, who was not involved in the study. “This data provides not just insight into the Earth system but also provides actionable guidance to land managers to mitigate biodiversity loss.”
Rock wren in Joshua Tree National Park. National Park Service / Jane Gamble A team from Cornell, the University of St. Andrews, and the American Bird Conservancy used land imaging data from NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) instruments to distinguish among such specific bird habitats as open forests, dense shrublands, herbaceous croplands, and forest/cropland mosaics. They also drew on NASA weather information and water data that matched the dates and times when birders made their reports.
When combined with a 14-year set of eBird checklists — 36 million sets of species observations and counts, keyed directly to habitats — the satellite data gave researchers almost a strong foundation to produce a clear picture of the health of bird populations. But there was one missing piece.
Wrestling with Wren Data
While some eBird checklists come from expert birders who’ve hiked deep into wildlife preserves, others are sent in by novices watching bird feeders and doing the dishes. This creates what Cornell statistician Daniel Fink described as “an unstructured, very noisy data set,” complete with gaps in the landscape that birders did not reach and, ultimately, some missing birds.
To account for gaps where birds weren’t counted, the researchers trained machine learning models to fill in the maps based on the remote sensing data. “For every single species — say the rock wren — we’ve created a simulation that mimics the species and a variety of ways that it could respond to changes in the environment,” Johnston said. “Thousands of simulations underlie the results we showed.”
CornellLab eBird The researchers achieved unprecedented resolution, zeroing in on areas 12 miles by 12 miles (27 km by 27 km), the same area as Portland, Oregon. This new population counting method can also be applied to eBird data from other locations, Fink said. “Now we’re using modeling to track bird populations — not seasonally through the year, but acrossthe years — a major milestone,” he added.
“We’ve been able to take citizen science data and, through machine learning methodology, put it on the same footing as traditionally structured surveys, in terms of the type of signal we can find,” said Cornell science product manager Tom Auer. “It will increase the credibility and confidence of people who use this information for precise conservation all over the globe.”
The Up Side
Since 1970, North America has lost one-quarter of its breeding birds, following a global trend of declines across species. The causes range from increased pollution and land development to changing climate and decreased food resources. Efforts to reverse this loss depend on identifying the areas where birds live at highest risk, assessing their populations, and pinpointing locations where conservation could help most.
For 83% of the reported species in the new study, the decline was greatest in spots where populations had previously been most abundant — indicating problems with the habitat.
“Even in species where populations are declining a lot, there are still places of hope, where the populations are going up,” Johnston said. The team found population increases in the maps of 97% of the reported species. “That demonstrates that there’s opportunity for those species.”
“Birds face so many challenges,” said Cornell conservationist Amanda Rodewald. “This research will help us make strategic decisions about making changes that are precise, effective, and less costly. This is transformative. Now we can really drill in and know where specifically we’re going to be able to have the most positive impact in trying to stem bird declines.”
By Karen Romano Young
NASA Headquarters, Washington
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Last Updated Jun 25, 2025 Related Terms
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By NASA
3 Min Read NASA Engineers Simulate Lunar Lighting for Artemis III Moon Landing
Better understanding the lunar lighting environment will help NASA prepare astronauts for the harsh environment Artemis III Moonwalkers will experience on their mission. NASA’s Artemis III mission will build on earlier test flights and add new capabilities with the human landing system and advanced spacesuits to send the first astronauts to explore the lunar South Pole and prepare humanity to go to Mars.
Using high-intensity lighting and low-fidelity mock-ups of a lunar lander, lunar surface, and lunar rocks, NASA engineers are simulating the Moon’s environment at the Flat Floor Facility to study and experience the extreme lighting condition. The facility is located at NASA’s Marshall Space Flight Center in Huntsville, Alabama.
NASA engineers inside the Flat Floor Facility at Marshall Space Flight Center in Huntsville, Alabama, mimic lander inspection and assessment tasks future Artemis astronauts may do during Artemis III. Lights are positioned at a low angle to replicate the strong shadows that are cast across the lunar South Pole. NASA/Charles Beason “The goal is really to understand how shadows will affect lander visual inspection and assessment efforts throughout a future crewed mission,” said Emma Jaynes, test engineer at the facility. “Because the Flat Floor Facility is similar to an inverted air hockey table, NASA and our industry partners can rearrange large, heavy structures with ease – and inspect the shadows’ effects from multiple angles, helping to ensure mission success and astronaut safety for Artemis III.”
Data and analysis from testing at NASA are improving models Artemis astronauts will use in preparation for lander and surface operations on the Moon during Artemis III. The testing also is helping cross-agency teams evaluate various tools astronauts may use.
The 86-foot-long by 44-foot-wide facility at NASA is one of the largest, flattest, and most stable air-bearing floors in the world, allowing objects to move across the floor without friction on a cushion of air.
Test teams use large, 12-kilowatt and 6-kilowatt lights to replicate the low-angle, high contrast conditions of the lunar South Pole. Large swaths of fabric are placed on top of the epoxy floor to imitate the reflective properties of lunar regolith. All the mock-ups are placed on air bearings, allowing engineers to easily move and situate structures on the floor.
The Flat Floor Facility is an air-bearing floor, providing full-scale simulation capabilities for lunar surface systems by simulating zero gravity in two dimensions. Wearing low-fidelity materials, test engineers can understand how the extreme lighting of the Moon’s South Pole could affect surface operations during Artemis III. NASA/Charles Beason “The Sun is at a permanent low angle at the South Pole of the Moon, meaning astronauts will experience high contrasts between the lit and shadowed regions,” Jaynes said. “The color white can become blinding in direct sunlight, while the shadows behind a rock could stretch for feet and ones behind a lander could extend for miles.”
The laboratory is large enough for people to walk around and experience this phenomenon with the naked eye, adding insight to what NASA calls ‘human in-the-loop testing.
NASA is working with SpaceX to develop the company’s Starship Human Landing System to safely send Artemis astronauts to the Moon’s surface and back to lunar orbit for Artemis III.
Through the Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars – for the benefit of all.
For more information about Artemis missions, visit:
https://www.nasa.gov/artemis
News Media Contact
Corinne Beckinger
Marshall Space Flight Center, Huntsville, Ala.
256.544.0034
corinne.m.beckinger@nasa.gov
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Last Updated Jun 17, 2025 EditorLee MohonContactCorinne M. Beckingercorinne.m.beckinger@nasa.govLocationMarshall Space Flight Center Related Terms
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By NASA
4 Min Read Future Engineers Shine at NASA’s 2025 Lunabotics Robotics Competition
And the winner is… the University of Utah in Salt Lake City. The Utah Student Robotics Club won the grand prize Artemis Award on May 22 for NASA’s 2025 Lunabotics Challenge held at The Astronauts Memorial Foundation’s Center for Space Education at the Kennedy Space Center Visitor Complex in Florida.
“Win was our motto for the whole year,” said Brycen Chaney, University of Utah, president of student robotics. “We had a mission objective to take our team and competition a step further, but win was right up front of our minds.”
Lunabotics is an annual challenge where students design and build an autonomous and remote-controlled robot to navigate the lunar surface in support of the Artemis campaign. The students from the University of Utah used their robot to excavate simulated regolith, the loose, fragmented material on the Moon’s surface, as well as built a berm. The students, who competed against 37 other teams, won grand prize for the first time during the Lunabotics Challenge.
“During the 16th annual Lunabotics University Challenge the teams continued to raise the bar on excavating, transporting, and depositing lunar regolith simulant with clever remotely controlled robots,” said Robert Mueller, senior technologist at NASA Kennedy for Advanced Products Development in the agency’s Exploration Research and Technology Programs Directorate, and lead judge and co-founder of the original Lunabotics robotic mining challenge. “New designs were revealed, and each team had a unique design and operations approach.”
Students from University of Illinois Chicago receive first place for the Robotic Construction Award during the 2025 Lunabotics Challenge.NASA/Isaac Watson Other teams were recognized for their achievements: The University of Illinois Chicago placed first for the Robotic Construction Award. “It’s a total team effort that made this work,” said Elijah Wilkinson, senior and team captain at the University of Illinois Chicago. “Our team has worked long and hard on this. We have people who designed the robot, people who programmed the robot, people who wrote papers, people who wired the robot; teamwork is really what made it happen.”
The University of Utah won second and the University of Alabama in Tuscaloosa came in third place, respectively. The award recognizes the teams that score the highest points during the berm-building operations in the Artemis Arena. Teams are evaluated based on their robot’s ability to construct berms using excavated regolith simulant, demonstrating effective lunar surface construction techniques.
To view the robots in action from the Robot Construction Award winners, please click on the following links: University of Illinois Chicago, University of Utah, University of Alabama in Tuscaloosa.
Students from Purdue University in Lafayette, Indiana received the Caterpillar Autonomy Award during the 2025 Lunabotics Challenge.
NASA/Isaac Watson Students from Purdue University in Lafayette, Indiana received the Caterpillar Autonomy Award for their work. The University of Alabama placed second, followed by the University of Akron in Ohio. This award honors teams that successfully complete competition activities autonomously. It emphasizes the development and implementation of autonomous control systems in lunar robotics, reflecting real-world applications in remote and automated operations.
An Artemis I flag flown during the Nov. 16, 2022, mission was presented to the University of Illinois Chicago, as well as the University of Virginia in Charlottesville as part of the Innovation Award. The recognition is given to teams for their original ideas, creating efficiency, effective results, and solving a problem.
Dr. Eric Meloche from the College of DuPage in Glen Ellyn, Illinois, and Jennifer Erickson, professor from the Colorado School of Mines in Golden each received an Artemis Educator Award, a recognition for educators, faculty, or mentors for their time and effort inspiring students.
The University of Utah received the Effective Use of Communications Power Award and the University of Virginia the agency’s Center for Lunar and Asteroid Surface Science Award.
Students from the Colorado School of Mines pose for a photo after receiving a Systems Engineering Award during the 2025 Lunabotics Competition.
NASA/Isaac Watson Students from the Colorado School of Mines placed first receiving a Systems Engineering Award. University of Virginia in Charlottesville and the College of DuPage in Glen Ellyn, Illinois, came in second and third places.
This is truly a win-win situation. The students get this amazing experience of designing, building, and testing their robots and then competing here at NASA in a lunar-like scenario while NASA gets the opportunity to study all of these different robot designs as they operate in simulated lunar soil. Lunabotics gives everyone involved new technical knowledge along with some pretty great experience.”
Kurt Leucht
Commentator, Lunabotics Competition and Software Development team lead
Below is a list of other awards given to students:
Systems Engineering Paper Award Nova Award: Liberty University in Lynchburg, Virginia; University of Virginia; College of DuPage Best Use of Systems Engineering Tools: The University of Utah Best Use of Reviews as Control Gates: The University of Alabama Systems Engineering Paper Award Leaps and Bounds Award: The University of Miami in Florida Best presentation award by a first year team: University of Buffalo in New York Presentations and demonstrations awards: University of Utah, Colorado School of Mines, University of Miami About the Author
Elyna Niles-Carnes
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