Could the Apollo 11 lunar module still be orbiting the Moon?
According to one researcher, at least two of the Apollo lunar modules that took astronauts up and down from the Moon could still be in lunar orbit, though their location is presently unknown.
His paper outlining the possible survival of the Apollo 11 LM Eagle can be found here. From his abstract:
The Apollo 11 “Eagle” Lunar Module ascent stage was abandoned in lunar orbit after the historic landing in 1969. Its fate is unknown. Numerical analysis described here provides evidence that this object might have remained in lunar orbit to the present day. The simulations show a periodic variation in eccentricity of the orbit, correlated to the selenographic longitude of the apsidal line. The rate of apsidal precession is correlated to eccentricity. These two factors appear to interact to stabilize the orbit over the long term.
More details here.
Hat tip to reader Mike Nelson, who sent me this story today. I am certain I reported it previously, but searching on Behind the Black failed to find it, so I decided to post again. As the researcher concludes:
Wouldn’t it be amazing if we could find this amazing little vessel and bring her back to Earth!!!!
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon. from any other book seller, or direct from my ebook publisher, ebookit.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
According to one researcher, at least two of the Apollo lunar modules that took astronauts up and down from the Moon could still be in lunar orbit, though their location is presently unknown.
His paper outlining the possible survival of the Apollo 11 LM Eagle can be found here. From his abstract:
The Apollo 11 “Eagle” Lunar Module ascent stage was abandoned in lunar orbit after the historic landing in 1969. Its fate is unknown. Numerical analysis described here provides evidence that this object might have remained in lunar orbit to the present day. The simulations show a periodic variation in eccentricity of the orbit, correlated to the selenographic longitude of the apsidal line. The rate of apsidal precession is correlated to eccentricity. These two factors appear to interact to stabilize the orbit over the long term.
More details here.
Hat tip to reader Mike Nelson, who sent me this story today. I am certain I reported it previously, but searching on Behind the Black failed to find it, so I decided to post again. As the researcher concludes:
Wouldn’t it be amazing if we could find this amazing little vessel and bring her back to Earth!!!!
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon. from any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Scott Manley did a video on this when the story was originally out:
https://www.youtube.com/watch?v=dBHbLV7xEhc
MJMJ: I am sure I did as well, but can’t find it by searching. To search the archive would take more time than I care to spend. Regardless, it is intriguing enough to repost, especially as the number of orbiters to the Moon is now increasing.
Robert,
My memory is that we discussed it for a while in the comments. I don’t know which of your posts got us started on the topic, however.
Bob, here’s your previous story: https://behindtheblack.com/behind-the-black/points-of-information/apollo-11-lunar-ascent-stage-might-still-be-in-orbit-around-the-moon/
Steve Golson: Thank you! I now see why I couldn’t find it, as I refer to it as the “ascent stage”.
Once we start getting more assets into lunar orbit over the next few years, I really think it would be worth the trouble to try and track it down. We’re not in any position for the time being to investigate its state up close, let alone retrieve it, but it knowing where it is, and how stable its orbit really is, would be a big first step.
Expect James Cameron will charter a Starship and go look for it.
BTW, the link to the paper leads to a pay wall. There is a free version of the paper on Arxiv…
https://arxiv.org/abs/2105.10088
Roger Twank: Thank you. I have changed the link to point to the arxiv free version.