CASE 001
:
THE CASE OF THE MISSING MOON ROCK
It survived 240,000 miles of space travel and outlasted every person who touched it on the Moon. For decades it sat locked in a laboratory vault on Earth. Then one morning, it was gone. A fragment of another world — vanished without a trace. Can you uncover what happened to the missing Moon rock?
CASE BRIEFING
At 9:47 a.m. on August 15, a laboratory technician conducting a routine inventory opened the storage container for lunar sample LS-0017-A — a fragment of the Moon's Sea of Tranquility, collected by Neil Armstrong on July 20, 1969.
The container was empty.
No alarm had been triggered. No unauthorized access had been recorded. No transfer document existed. The sample had simply — vanished.
Dr. Elena Ramirez was the first person investigators spoke to.
She had been the lead researcher on LS-0017-A for eleven months — the longest continuous assignment in the laboratory's recent history. She had published three papers using data from the sample. She had requested, and been granted, more examination time with LS-0017-A than any other researcher in the facility.
She had accessed Vault 3 twice on the day before the sample was reported missing.
When investigators arrived at her office that morning, she was already at her desk. She had been there since 6:00 a.m. — two hours before the laboratory officially opened.
She did not look surprised when they told her the sample was gone.
"I knew something was wrong," she said quietly. "I saw it yesterday. I just didn't understand what I was looking at yet."
Investigators asked her to explain.
She hesitated — then placed a folder on the desk.
"I think someone switched it," she said. "I think someone replaced the real Moon rock with something else. And I think they did it before I started my examination — which means what I was examining yesterday wasn't LS-0017-A at all."
Investigators were skeptical. The vault had registered no unauthorized access.
The container seal showed no tampering. If the sample had been switched — whoever did it had done so without leaving a single visible trace.
But Dr. Ramirez was not the only person who had been inside the restricted areas the previous day.
Marcus Chen — a laboratory technician — had entered the Sample Examination Room at 10:26 a.m. and exited at 10:41 a.m. His access was logged and legitimate. His stated reason: routine equipment maintenance.
He had not spoken to Dr. Ramirez that morning.
He had not signed the equipment log.
And three weeks earlier — Marcus Chen had submitted a formal request to conduct independent analysis of Apollo lunar samples. The request had been denied.
Your investigation begins now.
Examine all five Evidence Files carefully. Dr. Ramirez believes the rock was switched before her examination began — but she cannot prove it. The chemistry tells a story. The containers tell a story. The access log tells a story.
Not all of those stories agree with each other.
Was LS-0017-A stolen? Switched deliberately? And if so — who had the knowledge, the access, and the motive to do it without leaving a trace?
Some evidence will appear to point clearly in one direction. Examine it anyway. The most important question in this investigation is not what the evidence shows — it is what it actually means.
Instructions:
Play solo or with a team of up to 5 investigators. Examine the five Evidence Files together, or divide them among your team and have each investigator analyze different clues. Share what you discover, compare theories, and decide which evidence matters most.
When you've examined all the evidence, work individually or as a team to reach your final verdict—then reveal the solution to see if you cracked the case.
EVIDENCE FILES
EVIDENCE FILE 01 +
EVIDENCE FILE 01 — LUNAR SAMPLE INVENTORY RECORD
Case Reference: LSL-2024-0815
Sample ID: LS-0017-A
Mission: Apollo 11
Collection Date: July 20, 1969
Collection Location: Sea of Tranquility, Moon
Sample Type: Type B lunar basalt fragment
Recorded Mass: 22.7 grams
Storage Location: Lunar Sample Laboratory — Vault 3
Container Seal: CT-2217
Catalog Status: Active — restricted access
INVENTORY BACKGROUND
LS-0017-A is a Type B lunar basalt — a dark, dense volcanic rock formed approximately 3.5 billion years ago from cooling lava on the lunar surface. It has been held in secured storage since its transfer from the Apollo 11 curation program in 1970.
Each removal from Vault 3 requires an authorized researcher's access card and a completed transfer record. The sample was examined by eleven researchers over 57 years. The most recent examination prior to August 14 was seven months ago.
LS-0017-A was present and verified during the last scheduled inventory check — six weeks ago.
CURRENT FINDING
During routine inventory at 9:47 a.m. on August 15, the container assigned to LS-0017-A was found empty.
Container seal CT-2217 was intact. No visible damage to the container, lid, or sealing mechanism.
No removal or transfer of LS-0017-A appears in any record for the previous six months.
IMPORTANT NOTE
The central inventory system does not track temporary sample containers — the containers used when samples are removed from Vault 3 for examination. Those are tracked only by the individual researcher's laboratory notes.
A sample that has been switched, misplaced, or deliberately relocated within the laboratory would produce exactly the same inventory finding as a sample that has been stolen.
YOUR TASK
The inventory confirms LS-0017-A is missing from its container. It does not explain how or why.
What does this record actually establish — and what does it leave open?
LS-0017-A is one of approximately 58 samples returned by Apollo 11, part of a total collection of 2,196 lunar samples gathered across all Apollo missions. It cannot be replaced.
Research: NASA Lunar Sample Curation — nasa.gov/lunar-samples
EVIDENCE FILE 02 +
EVIDENCE FILE 02 — LABORATORY ACCESS LOG
Case Reference: LSL-2024-0815
Date: August 14
Facility: Lunar Sample Laboratory
Restricted Areas: Vault 3 / Sample Examination Room
Sample Referenced: LS-0017-A
ACCESS LOG — AUGUST 14
08:42 — Dr. Elena Ramirez
Authorized entry — Vault 3
08:51 — Dr. Elena Ramirez
Exit — Vault 3
09:03 — Dr. Elena Ramirez
Authorized entry — Sample Examination Room
10:17 — Dr. Elena Ramirez
Exit — Sample Examination Room
10:26 — Marcus Chen, Laboratory Technician
Authorized entry — Sample Examination Room
10:41 — Marcus Chen, Laboratory Technician
Exit — Sample Examination Room
17:36 — Dr. Elena Ramirez
Authorized entry — Vault 3
17:44 — Dr. Elena Ramirez
Exit — Vault 3
No other personnel accessed either restricted area on August 14.
SECURITY NOTES
The system records who entered and when — not what they carried.
Laboratory procedure permits authorized researchers to remove samples from Vault 3 for examination without creating a permanent transfer record, provided the sample remains within the facility.
Vault 3 requires Level 3 clearance. Dr. Ramirez holds Level 3. Marcus Chen holds Level 2 — which grants access to the Sample Examination Room but not to Vault 3.
MARCUS CHEN — NOTABLE DETAILS
Chen's stated reason for entering the Sample Examination Room: routine equipment maintenance.
The room's equipment log requires a technician's signature for all maintenance visits. Chen's name does not appear in the log for August 14.
Three weeks before the sample disappeared, Chen submitted a formal written request for supervised access to Apollo lunar samples — specifically Type B lunar basalts. The request was reviewed and denied.
The laboratory director's response: "Independent analysis of restricted Apollo samples requires institutional affiliation and a formally approved research protocol. Neither condition has been met."
Chen did not appeal.
A low-resolution camera covering the corridor outside the Sample Examination Room recorded Chen entering with a small carry bag. The bag was not present when he exited.
DR. RAMIREZ — NOTABLE DETAIL
Dr. Ramirez returned to Vault 3 at 17:36 — more than seven hours after her morning examination ended. She was inside for eight minutes.
No record in the case file explains why.
A colleague later recalled seeing Dr. Ramirez carrying a folder of printed materials when she left the building that evening. The contents of the folder were not recorded.
YOUR TASK
Two people were inside the restricted areas on August 14. One had legitimate reason. One did not sign the equipment log. One was denied access to the exact type of sample that is now missing.
What does the unsigned log tell you about why Marcus Chen was really in that room? Why did Dr. Ramirez return to Vault 3 seven hours after her examination ended? And which of these two people had both the knowledge and the opportunity to switch a Moon rock without leaving a trace?
Research what Type B lunar basalts are and why a researcher might want unauthorized access to one.
EVIDENCE FILE 03 +
EVIDENCE FILE 03 — SAMPLE EXAMINATION NOTES
Case Reference: LSL-2024-0815
Sample ID: LS-0017-A
Examination Date: August 14
Researcher: Dr. Elena Ramirez
Examination Type: Visual and microscopic inspection
Location: Sample Examination Room
EXAMINATION NOTES
LS-0017-A was removed from Vault 3 at 08:51 and brought to the Sample Examination Room for scheduled visual and microscopic inspection.
Under magnification, Dr. Ramirez observed something she had not seen in eleven months of working with this sample.
A series of reddish-brown patches along one fractured surface of the rock.
The patches were not present in any archived photograph of LS-0017-A.
DR. RAMIREZ — WRITTEN OBSERVATION
"The discoloration was immediately unusual. LS-0017-A is a Type B lunar basalt. The Moon has essentially no atmosphere and no liquid water. Under controlled storage conditions, this sample should show no new surface chemistry. The patches suggest iron-bearing minerals have undergone oxidation — which requires both oxygen and moisture. Neither should have been available to this sample."
"I considered contamination during handling. I considered a previous examination I was not aware of. Then I considered a third possibility — that what I was looking at was not LS-0017-A."
"I placed the rock in a temporary container and requested an urgent material analysis."
WHAT THIS MEANS — BRIEF SCIENCE NOTE
Iron oxidation occurs when iron reacts with oxygen and moisture to form iron oxide — commonly known as rust. On Earth this happens readily because our atmosphere is rich in oxygen and water vapor.
The Moon's surface has neither. Lunar rocks stored under controlled conditions should not develop new oxidation.
A lunar rock showing fresh iron oxidation is telling you something about where it has been.
YOUR TASK
Dr. Ramirez examined this sample for eleven months without observing the reddish-brown patches. They appeared — or were noticed — on August 14.
What does the oxidation tell you about the rock's history? If this discoloration could not have developed on a genuine lunar sample under controlled storage — what does that suggest about what Dr. Ramirez was actually examining?
Research iron oxidation and why lunar rocks are resistant to it. Then consider what kind of rock would show this chemistry — and where it might have come from.
EVIDENCE FILE 04 +
EVIDENCE FILE 04 — MATERIAL ANALYSIS REPORT
Case Reference: LSL-2024-0815
Sample ID: LS-0017-A (disputed)
Analysis Date: August 15
Requested By: Dr. Elena Ramirez
Test: Mineral and elemental composition screening
Laboratory: Planetary Materials Analysis Unit
CONTEXT
Following the unusual surface discoloration observed during examination on August 14, Dr. Ramirez requested urgent chemical analysis of the rock retrieved from the temporary sample container.
The analysis was performed on the rock from Temporary Container T-17 — labeled LS-0017-A.
RESULTS
The fragment contained common rock-forming elements including silicon, aluminum, calcium, magnesium, iron, and oxygen — consistent with both terrestrial and lunar basalt compositions.
Two findings were flagged:
Finding 1 — Hydrated minerals detected
The fragment contained minerals whose crystal structure indicated prior interaction with water. Hydrated minerals are common in Earth rocks. In a lunar sample maintained under dry, controlled storage conditions, their presence is unexpected.
What are hydrated minerals? Some minerals incorporate water molecules directly into their crystal structure through prolonged contact with water. Think of them as minerals that absorbed water and locked it inside. Earth rocks develop these readily. The Moon — with no liquid water — generally does not.
Finding 2 — Terrestrial weathering confirmed
Iron-bearing minerals within the fragment showed oxidation consistent with extended exposure to Earth's oxygen-rich atmosphere — beyond what would be expected from handling or minor contamination.
The degree of weathering was considered inconsistent with a lunar sample maintained under controlled storage conditions for 57 years.
LABORATORY CONCLUSION
The chemical profile of this fragment is more consistent with a terrestrial rock than with an Apollo lunar sample.
The laboratory recommended independent verification of the sample's identity before further analysis.
YOUR TASK
Evidence File 03 raised the question. Evidence File 04 answers it — at least partially.
The rock in Temporary Container T-17 shows chemistry that does not belong to a genuine Apollo sample stored under controlled conditions for 57 years.
But this analysis alone does not prove a deliberate switch. What alternative explanations still need to be ruled out? And if the rock in T-17 is not LS-0017-A — where is the real Moon rock?
Research the difference between lunar and terrestrial basalt. Consider what kind of Earth rock could be mistaken for a lunar sample visually — and how chemistry exposes the difference.
EVIDENCE FILE 05 +
EVIDENCE FILE 05 — SAMPLE CONTAINER AUDIT
Case Reference: LSL-2024-0815
Audit Date: August 15
Location: Sample Examination Room / Temporary Storage
Conducted By: Laboratory Operations Team
Sample Referenced: LS-0017-A
CONTEXT
Following the material analysis findings in Evidence File 04, laboratory staff conducted a thorough search of all containers, work surfaces, and temporary storage locations used during the August 14 examination session.
FINDINGS
Two containers were identified as relevant.
Temporary Container T-17
Label: LS-0017-A
Contents: Rock fragment with reddish-brown surface alteration
Mass: 22.9 grams
Temporary Container T-18
Label: EARTH BASALT — TEACHING SAMPLE
Contents: Dark-gray rock fragment — no visible alteration
Mass: 22.7 grams
Both containers were used at the same examination workstation on August 14.
CRITICAL MEASUREMENT
Archived record for LS-0017-A — recorded mass: 22.7 grams
The rock in T-17 — labeled as LS-0017-A — weighs 22.9 grams.
The rock in T-18 — labeled as the Earth basalt teaching sample — weighs 22.7 grams.
Investigators noted that magnified photographs of the rock recovered from T-18 showed several distinctive surface features appearing in the same locations as features visible in archived photographs of LS-0017-A.
Formal verification has not yet been completed.
ONE DETAIL THAT DOES NOT FIT
Laboratory procedure requires temporary containers to be labeled before samples are placed inside them.
Both T-17 and T-18 were prepared at the same workstation. Both labels were applied during the same session.
If procedure was followed — each rock was placed into an already-labeled container.
A researcher examining LS-0017-A would have placed it into T-17, already labeled LS-0017-A — and the teaching sample into T-18, already labeled Earth Basalt.
For the rocks to have ended up in the wrong containers — either procedure was not followed, or someone deliberately moved the rocks after the labels were applied.
YOUR TASK
You now have all five Evidence Files.
The mass discrepancy is small — 0.2 grams. But it is in the wrong direction. If T-17 contains the genuine Moon rock it should weigh less than 22.7 grams — not more — since the fragment analyzed in EF04 was taken from it, reducing its mass slightly.
T-18 still weighs exactly 22.7 grams. Nothing has been removed from it.
Using evidence from all five files — what do you believe happened to LS-0017-A? Was this an accident or a deliberate act? Who had the motive, the knowledge, and the opportunity? And where is the real Moon rock now?
The containers, the chemistry, the access log, and the denied request are all pointing somewhere.
Follow the science.
HAVE YOU SOLVED THE CASE?
Review the evidence and decide what you think happened. If you're investigating with others, discuss your findings and agree on your final verdict before revealing the answer.
Once your team has reached a conclusion, reveal the answer.