Traces on the Moon
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Traces on the Moon

Presenting official, verifiable evidence of human presence on the Moon from the Apollo missions.

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  • NASA Apollo Program
  • LROC Mission
  • NSSDC Archive
All missions

August 1971

Apollo 15

First use of the Lunar Roving Vehicle

Spacecraft: CSM Endeavour·LM Falcon

Apollo 15: US flag, lunar rover, lunar module, and astronaut James Irwin at Hadley–Apennine

First extended stay and LRV operations: Falcon, rover tracks, and ALSEP in one surface frame.

NASA

Official source

Key facts

Landing site

Hadley Rille

Surface EVA

18 hours, 33 minutes

Samples returned

77.31 kg (170.44 lb)

Flight duration

12 days, 7 hours, 12 minutes

Launch

July 26, 1971

Lunar landing

July 30, 1971

Earth return

August 7, 1971

Terrain

Palus Putredinis

Crew

Commander
David R. Scott
Command module pilot
Alfred M. Worden
Lunar module pilot
James B. Irwin

Landing site

Published coordinates for the landing point in Palus Putredinis. Open Explore for Site detail imagery tied to this mission, or read how LRO images relate to Apollo and browse orbital evidence entries.

26.13224° N latitude

3.63400° E longitude

View in explorer

Orbital context

LROC imagery of the Apollo 15 landing zone

LRO narrow-angle camera products georeference hardware and surface disturbance at the published coordinates for Hadley Rille. Featured-site pages and catalogue links below point to the same releases cited on the Evidence page. All six Apollo sites from orbit lists every crewed zone with LROC featured links in one table.

LROC image of Apollo 15 site showing LM, ALSEP, rover, and traverse tracks

Orbital pass resolving the lunar module, experiments, and wheel paths from Hadley–Apennine.

NASA / Goddard / Arizona State University (LROC)

Official source

Evidence at this site

What LRO, surface photography, and archives show at Hadley Rille

Surface & instruments

Apollo 15 Hasselblad photograph of the laser ranging retroreflector on the Moon

Apollo 15 deployed a long-lived laser ranging array—still used in global LLR campaigns.

NASA

Official source

Rover tracks in low-altitude NAC

Campaign imagery shows wheel paths, parked LRV geometry, and crew paths between Falcon, ALSEP, and geology stops.

Regional context at the rille margin

Post-157 and later strips place the landing point in geomorphic context beside Hadley Rille and the massifs.

Largest Apollo retroreflector array

Apollo 15’s LRRR is the highest cross-section Apollo array in routine LLR solutions—still interrogated from Earth.

Documented cislunar operations

Deep-space EVA procedures, timing, and film recovery are preserved in mission logs independent of surface photography.

Lunar laser ranging

Apollo 15 Retroreflector

Largest Apollo reflector array in routine use.

Deployed 1971-07-31

Selected frames

Apollo 15 crew with the lunar roving vehicle

Crew and LRV in the surface record.

NASA

Apollo 15 ALSEP on the lunar surface

Surface experiment package in situ.

NASA

LROC thumbnail of layered terrain near Apollo 15 landing site

Regional LROC context at the landing zone.

NASA / Goddard / Arizona State University (LROC)

Common questions about evidence for this landing

Factual shortcuts—full citations sit in the sections above and in mission source links.

What do LRO and LROC images show at Hadley Rille?
Published Lunar Reconnaissance Orbiter Camera (LROC) narrow-angle products resolve hardware, experiments, and regolith disturbance at the selenographic coordinates on this page. Use the orbital section above and the official LROC / NASA links under “Official sources” for the featured-site and data-product pages for Apollo 15.
Did Apollo 15 leave a laser-ranging retroreflector on the surface?
Yes. This flight deployed an Apollo laser ranging package still timed by Earth observatories. See the lunar laser ranging callout in the evidence section, then follow NASA and ILRS references from the Sources index and the retroreflector catalogue.
Where can I read how this evidence fits the wider Apollo record?
The How we know page summarizes independent lines of proof. The Evidence catalogue groups LRO imagery, hardware, LLR, photo comparisons, and NASA documents with primary links.

Site imagery

Curated in explorer Site Detail

Apollo 15 — Hadley–Apennine. Use the explorer’s Site detail tab for the same rasters, or open the official product pages below.

Site map

Site map — regional NAC (LROC post 157, Hadley–Apennine)

Official LROC Apollo landing sites release (July 2009, post 157): ~1 km-scale narrow-angle frame of Hadley Rille and the Apollo 15 valley landing corridor.

Official LROC / NASA productFile / catalog page

Evidence close-up

LM, ALSEP, and rover tracks (low-altitude NAC)

NASA Goddard LROC NAC release from the 2011 low-altitude campaign: lunar module *Falcon*, ALSEP vicinity, and rover / astronaut tracks across the mare basalt—strong single-frame surface evidence.

Official LROC / NASA productFile / catalog page
Open explorer — Site detail

Mission overview

First J-mission: Falcon landed at Hadley–Apennine with the first LRV, enabling three long EVAs, deep drilling, and the largest Apollo sample mass to that point. Worden conducted a stand-up EVA in cislunar space during transearth coast.

Key achievements

  • First use of LRV
  • Deep-space EVA during return
  • Genesis Rock discovery

Surface hardware & experiments

  • Lunar Roving Vehicle
  • ALSEP
  • Lunar surface drill

Timeline highlights

  1. July 26, 1971

    Launch & translunar coast

    Saturn V delivers Endeavour, Falcon, and LRV to the Moon with extended consumables for surface operations.

  2. July 30, 1971

    Landing at Hadley–Apennine

    Falcon sets down near Hadley Rille; crew unstows the rover and begins the first long-baseline geology campaign.

  3. July 31 – August 2, 1971

    Three rover-supported EVAs

    Traverses reach Apennine Front outcrops and mare basalts; ALSEP and the third Apollo LRRR are deployed; deep core samples are attempted.

  4. August 7, 1971

    TEI, deep-space EVA, splashdown

    Transearth coast includes SIM bay science and Worden’s stand-up EVA to retrieve film cassettes; Pacific recovery closes the mission.

Official sources

Primary portals and data releases for verifying mission-specific claims. Cross-check themes on the Evidence catalogue and the wider How we know overview when you need category-level context.

  • NASA — Apollo 15 mission summaryhttps://www.nasa.gov/mission_pages/apollo/missions/apollo15.html
  • LROC — Apollo 15 featured sitehttps://www.lroc.asu.edu/featured_sites/view/apollo_15_visited
  • NASA GSFC — Follow the Tracks releasehttps://www.flickr.com/photos/gsfc/6816337786/
  • Apollo Lunar Surface Journal — Apollo 15https://www.hq.nasa.gov/alsj/a15/a15.html

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Next mission

Apollo 16