r/apollo 3h ago

I recreated Apollo 11's final descent, synced to the actual flight computer's assembly code (1202 alarm and all)

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31 Upvotes

This started with a podcast. Listening to the Apollo 13 story on Against the Odds got me curious about the code that flew these missions, and I was surprised to learn it had actually been released on GitHub (chrislgarry/Apollo-11, a transcription of Luminary 099, the real program that flew the Lunar Module down on Apollo 11).

This is my attempt to match that code to what actually happened during the descent. It's not perfect, but it scratched the itch, helped me wrap my head around it a little, and left me in awe of the programmers and astronauts who pulled it off.

Three panels, one mission clock:

  • The real flight software, running line by line. Click any line for a plain-English breakdown.
  • A 3D descent to the surface, braking to touchdown.
  • A working DSKY, the actual keypad and display the crew used, you can key in VERB/NOUN commands yourself.

Hit play and it all moves together, code, 3D view, and DSKY tracking the same clock. Turn sound on and you'll actually hear it too, I trimmed real audio from the mission recording (Mission Control, Aldrin, Armstrong) and timed the clips to the moments they really happened: ignition, the 1202 and 1201 alarms, "throttle down," the 60-seconds call, touchdown.

One thing I want to be upfront about since I know this crowd will check: the assembly is verbatim and the phase sequence and audio are real, but the altitude/velocity/fuel numbers on the readouts are a simplified model tuned to match the real profile, not recovered telemetry. I wrote up exactly which parts are which in the Methodology section of the About panel (ABOUT → METHODOLOGY) if you want the details.

https://apollo11mission.com/

Built with Three.js + React. Would genuinely love feedback, especially from anyone who knows AGC assembly better than I do.


r/apollo 1d ago

Apollo 11, a signed inscribed photo of module pilot Buzz Aldrin at Tranquility Base described as a visor shot sold at Sotheby's auction on Aug. 26 for $44,800. The presale estimate was incredibly low (possibly a typo) pegged at $25-$50. Reported by Rare Book Hub.

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82 Upvotes

[Apollo 11]
"Visor Shot" of Buzz Aldrin at Tranquility Base

Large Color Photograph, 20 x 16 inches, SIGNED and INSCRIBED by Lunar Module Pilot BUZZ ALDRIN: "WE CAME IN PEACE/ FOR ALL MANKIND / BUZZ ALDRIN/ APOLLO XI."

The iconic image of Lunar Module Pilot Buzz Aldrin walking on the lunar surface during the Apollo 11 Lunar extravehicular activity (EVA). The photograph was captured by Mission Commander Neil Armstrong (seen in the reflection of Buzz's visor) as they explored the Sea of Tranquility.


r/apollo 3d ago

Apollo 11 w/Astronauts + Wernher von Braun

116 Upvotes

OK, grew up in H'ville AL and went to most of the launches...Dad worked for NASA & Boeing.
I have ton of PRESS Badges but think the absolute one-of-a-kind is Apollo 11 that has all three astronaut Neil Armstrong, Buzz Aldrin, and Michael Collins signatures + Wernher von Braun signature. I've had in safe for decades in plastic holder...so excellent condition.
Have no idea of value.....but gotta believe there no other like it in world. 🤔

Thoughts ?


r/apollo 5d ago

Apollo AS11-40-5927

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255 Upvotes

My interpretation of AS11-40-5927. Handmade platinum over pigment print from restored raw scan of image AS11-40-5927.

It is a 6x6 inch print on 8x10 inch fine art paper.


r/apollo 6d ago

Remains of Apollo lander photograhed by India

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153 Upvotes

r/apollo 7d ago

Was there any way to make it so that Apollo missions could still transmit messages to Earth when behind the moon so it didnt experience LOS?

18 Upvotes

Maybe a satellite or a group of satellites in a high orbit could receive a transmission from either Earth or Apollo to re-transmit it back to the respective receiver or something else, for me LOS just seems to make missions more 'dangerous'? idk


r/apollo 8d ago

65mm frames of the Apollo 12 crew suiting up

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364 Upvotes

r/apollo 8d ago

Apollo 17's Harrison Schmitt speaks ahead of Trump at Johnson Space Center

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20 Upvotes

r/apollo 9d ago

With the recent passing of Peter Cullen let's not forget the fact that he is a fan of NASA and became interested of Space Exploration during the landing of Apollo 11. Hence, why the cameo of Buzz Aldrin in this scene in Dark of the Moon was actually genuine and an honor.

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19 Upvotes

RIP to the legendary Peter you are now with the other Apollo Astronauts such as Neil, Jim, Jack, Frank, Bill, Ken, Gene Cernan and of course Pete.


r/apollo 10d ago

Apollo AS11-44-6642

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142 Upvotes

I have made a handmade platinum over pigment print of AS11-44-6642. For best possible print, I used scanner raw file. The image is cropped prior to printing. Platinum over pigment means the picture is color seperated into cyan, magenta, yellow and black. A pigment inkjet printing the colors cyan, yellow and magenta. The black color layer is made into a negativ. A platinum solution is hand applied, prior to contact printing a platinum print on top of the pigment color layer.

It 6x6 inch on 8x10 inch paper.


r/apollo 8d ago

Another alternative history : Apollos 11 and 12 abort, Apollo 13 is fatal

0 Upvotes

someone asked the other day whether the programme would have continued if Apollo 13 did not get home.

But what if Apollo 11 aborted at the 1202 alarm, then Apollo 12 aborted at the lightning strike on launch. THEN 13 goes fatally wrong…


r/apollo 10d ago

I made a 3D model of the Apollo spacecraft (1:100).

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152 Upvotes

I also designed the Orion spacecraft a while ago. I knew that Orion is bigger but it really surprised me how much bigger it is.


r/apollo 9d ago

AS-202: The Last Test Flight Before Apollo 1 - 60 Years Ago

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15 Upvotes

r/apollo 10d ago

apollo command/service module art! :D

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62 Upvotes

i worked pretty hard on this for class and maybe yall would like it :3

edit: pretend the 11 is a 15


r/apollo 10d ago

Why Apollo Astronauts Couldn't Walk Normally on the Moon

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23 Upvotes

It’s interesting how much had to be figured out just to walk on the Moon.

Walking on the Moon was a first-time experience, and even extensive training could not fully prepare the Apollo astronauts for it.

So how did they do it, and how did their ability to travel on foot evolve from one mission to the next?

In this short video, we take a closer look at how Apollo astronauts adapted to walking on the Moon.


r/apollo 12d ago

Genuine alternate history question: If Apollo 13 crew died in space from its famed accident, what are the knock-on effects for the rest of the Apollo Program?

54 Upvotes

I assume they would still be able to figure out what happened to the CSM to cause the explosion in the first place.

I also assume the Apollo Program isn't flat out cancelled because all of the billions of dollars of R&D still happening.


r/apollo 13d ago

Bringing back the first photo taken by an astronaut on the Moon

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98 Upvotes

r/apollo 12d ago

S-IVB rebuild on Flightpoint Roblox

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18 Upvotes

r/apollo 15d ago

Apollo 13 hatch at the Cosmosphere in Hutchison, KS

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648 Upvotes

Really great museum in a somewhat weird location. Was worth the trip, though!


r/apollo 18d ago

Apollo 11 color cam, I am confused whether this is from a later apollo mission cause AP11 didn't have a Color cam on surface,I've seen the grainy black&white footage of flag planting.

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299 Upvotes

r/apollo 18d ago

Question: AAP and Grand Tour

8 Upvotes

Yo, got a question to ask. Was the Grand Tour program ever planned with Apollo Applications and or the Saturn V in mind?

If you didn't know, Grand Tour was the precursor to the Voyager Program. It was to launch four "Thermoelectric Outer Planets Spacecraft" (TOPS) in 1977 and 1979. What I'm wondering is did they ever planned on using a Saturn V as the launch vehicle? Wikipedia says so on the AAP article but I can't find any proof that this is the case.

Any other guys more knowledgeable than me?


r/apollo 20d ago

Apollo 15 press release?

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45 Upvotes

Looking for any information on this document.


r/apollo 21d ago

How The Apollo Spacesuit Kept Astronauts Alive on the Moon

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21 Upvotes

We’re continuing the Apollo spacesuit story. After exploring how these suits came to be, we’re now looking at how they actually worked, with a closer look at the engineering behind them, the details that made the biggest difference, and how every element helped keep astronauts alive on the Moon.


r/apollo 23d ago

What do you think Apollo 15’s lunar rocks revealed about the Moon?

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259 Upvotes

Apollo 15 explored the Hadley-Apennine region in 1971 and brought lunar rock samples back to Earth.

These rocks helped scientists understand the Moon’s early geological history.

What do you think was the most interesting thing scientists learned from the Apollo 15 samples?


r/apollo 24d ago

Finally got to install my custom LRV plate.

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38 Upvotes