THE EVIDENCE / LASERS
Laser beams that bounce back from Apollo hardware.
RECORD / AT A GLANCE
DOCUMENTED
The reflectors are there and still work. They show hardware sits at the Apollo sites, though on their own they cannot show that people put it there.
THE EVENTS / THE CLAIM / THE RECORD
July 1969
The crew sets out a 100-reflector array near Tranquility Base.
1 August 1969
Lick Observatory in California records the first returns from the Apollo 11 array.
1971
Apollo 15 leaves a 300-reflector array, the largest on the Moon.
2010
Using LRO images, Apache Point finds the Lunokhod 1 reflector again.
2023
The Apache Point team publishes its 2006–2020 dataset.
READ THE FILE
Robots can carry mirrors.
Repeatable measurements to known spots.
Open an article for its evidence, labeled AI assessment and numbered sources. Read the complete static edition ↗
WHAT PEOPLE SAY ABOUT THIS FILE
3 claims people make about this file, each rated documented, partly true, disputed, unproven or false. Think a rating is wrong? Use Dispute or Support, or join the Discussion.
Observatories bounce lasers off them.
Who says it: Laser ranging papers.
Lunokhod 1 and 2 had French-built reflectors.
Who says it: Laser ranging records.
Returns come sharply from the reflector sites.
Who says it: Hoax sites.
OPEN THE RECORD
Numbered citations in each article identify the relevant sources. These records have different purposes and evidentiary weight.
Research / institutional history. Carried from the first edition and re-listed 23 October 2026; cited for the specific point in the text.
Research / institutional history. Carried from the first edition and re-listed 23 October 2026; cited for the specific point in the text.
Research / institutional history. Carried from the first edition and re-listed 23 October 2026; cited for the specific point in the text.
Peer-reviewed report by Faller and colleagues on the first detections at Lick Observatory, 1 August 1969.
Primary institutional record. Carried from the first edition and re-listed 23 October 2026; cited for the specific point in the text.
NASA article contains an erroneous radial-distance description. Avoid its distance record list; total rover distance is approximately27.9km.
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Robots can carry mirrors.
The Soviet Lunokhod rovers carried French-built reflectors, and nobody rode on them. So the existence of a reflector does not prove a person placed it. [1] Skeptics also note that lasers can bounce off the Moon’s bare surface.
Research / institutional history. Carried from the first edition and re-listed 23 October 2026; cited for the specific point in the text.
Repeatable measurements to known spots.
A laser station fires a timed light pulse at an array and counts the few photons that come back. The round-trip time gives the distance. The Apache Point team reports fifteen years of data to five arrays with a median nightly accuracy of 1.7 millimeters. [1]
The first returns from the Apollo 11 array were recorded at Lick Observatory on 1 August 1969. [4] Bare lunar soil does return some light, but the arrays give returns far stronger and sharper, and only from the precise coordinates where Apollo crews worked.
A 2024 study found the Apollo arrays have dimmed over the decades, probably because dust has settled on them. [3] The reflectors fit with everything else: the documented sites, the photographs, the samples.
Research / institutional history. Carried from the first edition and re-listed 23 October 2026; cited for the specific point in the text.
Research / institutional history. Carried from the first edition and re-listed 23 October 2026; cited for the specific point in the text.
Research / institutional history. Carried from the first edition and re-listed 23 October 2026; cited for the specific point in the text.
Peer-reviewed report by Faller and colleagues on the first detections at Lick Observatory, 1 August 1969.
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