NASA releases Blue Ghost movie landing while Firefly prepares lander to observe solar eclipse of the Moon by Earth
NASA today released a fantastic movie of Firefly’s Blue Ghost lunar lander as it touched down on the Moon on March 2, 2025, taken by four cameras mounted on the underside of its Blue Ghost lunar lander.
I have embedded the movie below.
The compressed, resolution-limited video features a preliminary sequence that NASA researchers stitched together from SCALPSS 1.1’s four short-focal-length cameras, which were capturing photos at 8 frames per second during the descent and landing.
The sequence, using approximate altitude data, begins roughly 91 feet (28 meters) above the surface. The descent images show evidence that the onset of the interaction between Blue Ghost’s reaction control thruster plumes and the surface begins at roughly 49 feet (15 meters). As the descent continues, the interaction becomes increasingly complex, with the plumes vigorously kicking up the lunar dust, soil and rocks — collectively known as regolith. After touchdown, the thrusters shut off and the dust settles. The lander levels a bit and the lunar terrain beneath and immediately around it becomes visible.
Engineers will use this imagery to better anticipate and possibly reduce the amount of dust kicked up during future landings.
Meanwhile, Firefly engineers are preparing the lander to observe tomorrow night’s lunar eclipse, but from a completely different perspective. On Earth we will see the Earth’s shadow slowly over five hours cross the Moon. On the Moon Blue Ghost will see the Earth cross in front of the Sun. Because of our home world’s thick atmosphere, there should be a ring remaining during totality.
Because the Moon will be in shadow during the eclipse, the challenge will be power management, operating the spacecraft solely on its batteries.
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NASA today released a fantastic movie of Firefly’s Blue Ghost lunar lander as it touched down on the Moon on March 2, 2025, taken by four cameras mounted on the underside of its Blue Ghost lunar lander.
I have embedded the movie below.
The compressed, resolution-limited video features a preliminary sequence that NASA researchers stitched together from SCALPSS 1.1’s four short-focal-length cameras, which were capturing photos at 8 frames per second during the descent and landing.
The sequence, using approximate altitude data, begins roughly 91 feet (28 meters) above the surface. The descent images show evidence that the onset of the interaction between Blue Ghost’s reaction control thruster plumes and the surface begins at roughly 49 feet (15 meters). As the descent continues, the interaction becomes increasingly complex, with the plumes vigorously kicking up the lunar dust, soil and rocks — collectively known as regolith. After touchdown, the thrusters shut off and the dust settles. The lander levels a bit and the lunar terrain beneath and immediately around it becomes visible.
Engineers will use this imagery to better anticipate and possibly reduce the amount of dust kicked up during future landings.
Meanwhile, Firefly engineers are preparing the lander to observe tomorrow night’s lunar eclipse, but from a completely different perspective. On Earth we will see the Earth’s shadow slowly over five hours cross the Moon. On the Moon Blue Ghost will see the Earth cross in front of the Sun. Because of our home world’s thick atmosphere, there should be a ring remaining during totality.
Because the Moon will be in shadow during the eclipse, the challenge will be power management, operating the spacecraft solely on its batteries.
Readers!
My annual February birthday fund-raising drive for Behind the Black is now over. Thank you to everyone who donated or subscribed. While not a record-setter, the donations were more than sufficient and slightly above average.
As I have said many times before, I can’t express what it means to me to get such support, especially as no one is required to pay anything to read my work. Thank you all again!
For those readers who like my work here at Behind the Black and haven't contributed so far, please consider donating or subscribing. My analysis of space, politics, and culture, taken from the perspective of an historian, is almost always on the money and ahead of the game. For example, in 2020 I correctly predicted that the COVID panic was unnecessary, that the virus was apparently simply a variation of the flu, that masks were not simply pointless but if worn incorrectly were a health threat, that the lockdowns were a disaster and did nothing to stop the spread of COVID. Every one of those 2020 conclusions has turned out right.
Your help allows me to do this kind of intelligent analysis. I take no advertising or sponsors, so my reporting isn't influenced by donations by established space or drug companies. Instead, I rely entirely on donations and subscriptions from my readers, which gives me the freedom to write what I think, unencumbered by outside influences.
You can support me either by giving a one-time contribution or a regular subscription. There are four ways of doing so:
1. Zelle: This is the only internet method that charges no fees. All you have to do is use the Zelle link at your internet bank and give my name and email address (zimmerman at nasw dot org). What you donate is what I get.
2. Patreon: Go to my website there and pick one of five monthly subscription amounts, or by making a one-time donation.
3. A Paypal Donation or subscription:
4. Donate by check, payable to Robert Zimmerman and mailed to
Behind The Black
c/o Robert Zimmerman
P.O.Box 1262
Cortaro, AZ 85652
You can also support me by buying one of my books, as noted in the boxes interspersed throughout the webpage or shown in the menu above.
Although Scott Manley discusses IM’s Athena in the first half of this video, he also ponders the question as to why commercial space companies have had such a hard time landing on the Moon, and compares modern landings with the Surveyor landers.
https://www.youtube.com/watch?v=ISZTTEtHcTg (26 minutes)
Manley touches on software, but not very deeply. I have additional thoughts on software problems. The 1960s had limited capability computers, so the software was the minimum needed to navigate to and land onto the Moon. Modern software tends to be large and complex. Add to that the tendency to have multiple sensors for navigation, guidance, and control, and I think we can see that modern software has a lot to sort through. There may even be some hubris involved. The lander that didn’t account for the drop-off of the terrain when it flew over the large crater that was its landing site had a fatal flaw in its error detection, where it ignored the altitude data, because the assumption was that a rapid drop of the terrain was a sign that the software interpreted as an obvious error in the data stream. The engineers had not updated the software for the new conditions when the landing site was changed from a large plane to the interior of a large crater.
Modern software engineers are putting in far more complexity, giving more room for unintended features (bugs) to crop up. Perhaps they think that they are adding flexibility and robustness, but the complexity give places for the team to get bit in the butt.
In the 1960s, less was more (as Hollywood often says), which really means less can be better. Stick to the basics and Keep It Simple.
Manley’s other points about the differences between 1960s landers and todays give good explanations as to why we cannot just land more Surveyors on the Moon. Essentially, it is time to do real work, not the basic preliminary test landings that the Surveyors made.
Edward: Hm. I wrote about this more than a year ago:
Have modern space engineers forgotten the importance of keeping things simple?
Nice that others are catching up. :)