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NASA’s Lunar Reconnaissance Orbiter Spots Rocket Impact Site on Moon

Gif of a rocky, grayscale lunar landscape, as seen from above by LRO. It switches between views of the landscape some time before and some time after an asteroid impact. A dark double crater appears near the center of the image.
This animated GIF confirms the location of the newly formed rocket body double crater. The before image is LRO’s view from Feb. 28, 2022 (M1400727806L). The after image is from May 21, 2022 (M1407760984R). The width of the frame is 367 meters, about 401 yards.
Credit: NASA/Goddard/Arizona State University

Astronomers discovered a rocket body heading toward a lunar collision late last year. Impact occurred March 4, with NASA’s Lunar Reconnaissance Orbiter later spotting the resulting crater. Surprisingly the crater is actually two craters, an eastern crater (18-meter diameter, about 19.5 yards) superimposed on a western crater (16-meter diameter, about 17.5 yards).

rocky, grayscale lunar landscape, as seen from above by LRO; a white arrow indicates the rocket body impact site
A rocket body impacted the Moon on March 4, 2022, near Hertzsprung crater, creating a double crater roughly 28 meters wide in the longest dimension. LROC NAC M1407760984R; image enlarged 3x
Credits: NASA/Goddard/Arizona State University

The double crater was unexpected and may indicate that the rocket body had large masses at each end. Typically a spent rocket has mass concentrated at the motor end; the rest of the rocket stage mainly consists of an empty fuel tank. Since the origin of the rocket body remains uncertain, the double nature of the crater may indicate its identity.

rocky, grayscale lunar landscape, as seen from above by LRO; a white arrow indicates the rocket body impact site
The crater formed (5.226 degrees north, 234.486 degrees east, 1,863 meters elevation) in a complex area where the impact of ejecta from the Orientale basin event overlies the degraded northeast rim of Hertzsprung basin (536 kilometers diameter). The new crater is not visible in this view, but its location is indicated by the white arrow. LROC WAC mosaic, 110 kilometers width.
Credits: NASA/Goddard/Arizona State University

No other rocket body impacts on the Moon created double craters. The four Apollo SIV-B craters were somewhat irregular in outline (Apollos 13, 14, 15, 17) and were substantially larger (greater than 35 meters, about 38 yards) than each of the double craters. The maximum width (29 meters, about 31.7 yards) of the double crater of the mystery rocket body was near that of the S-IVBs.

Grayscale views of four lunar impact craters, created by spent Apollo mission rocket stages.
These four images show craters formed by impacts of the Apollo SIV-B stages: crater diameters range from 35 to 40 meters (38.2 to 43.7 yards) in the longest dimension.
Credits: NASA/Goddard/Arizona State University

LRO is managed by NASA’s Goddard Space Flight Center in Greenbelt, Maryland, for the Science Mission Directorate at NASA Headquarters in Washington. Launched on June 18, 2009, LRO has collected a treasure trove of data with its seven powerful instruments, making an invaluable contribution to our knowledge about the Moon. NASA is returning to the Moon with commercial and international partners to expand human presence in space and bring back new knowledge and opportunities.

rocky, grayscale lunar landscape, as seen from above by LRO; a white square outline indicates the rocket body impact site
Full resolution (100 cm pixels) image centered on the new rocket body impact double crater. NAC M1407760984R, image width 1,100 meters.
Credits: NASA/Goddard/Arizona State University
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By Mark Robinson
Arizona State University, Tempe

Media contact: Nancy Neal Jones
NASA’s Goddard Space Flight Center, Greenbelt, Md.