Michael Collins (CMP)

And don't forget one in the command module.

Charlie Duke (CAPCOM)

Tranquility, Houston. We have you pitched up about 4 1/2 degrees. Over.

Neil Armstrong (CDR)

That's confirmed by our local observation.

Michael Collins (CMP)

And thanks for putting me on relay, Houston. I was missing all the action.

Charlie Duke (CAPCOM)

Roger. We'll enable MSFN relay.

Charlie Duke (CAPCOM)

Roger, Columbia. This is Houston. Say something. They ought to be able to hear you. Over.

Michael Collins (CMP)

Roger, Tranquility Base. It sure sounded great from up here. You guys did a fantastic job.

Neil Armstrong (CDR)

Thank you. Just keep that orbiting base ready for us up there now.

Charlie Duke (CAPCOM)

Columbia, Houston. LOS 103 27, AOS 104 13. Over.

Charlie Duke (CAPCOM)

Tranquility Base, Houston. All your consumables are solid. You're looking good in every respect. We copy the DPS are venting. Everything is copasetic. Over.

Neil Armstrong (CDR)

Houston, the guys that said that we wouldn't be able to tell precisely where we are are the winners today. We were a little busy worrying about program alarms and things like that in the part of the descent where we would normally be picking out our landing spot; and aside from a good look at several of the craters we came over in the final descent, I haven't been able to pick out the things on the horizon as a reference as yet.

Charlie Duke (CAPCOM)

Roger, Tranquility. No sweat. We'll figure out—We'll figure it out. Over.

Neil Armstrong (CDR)

You might be interested to know that I don't think we notice any difficulty at all in adapting to one sixth g. It seems immediately natural to move in this environment.

Charlie Duke (CAPCOM)

Roger, Tranquility. We copy. Over.

Neil Armstrong (CDR)

The area out the left hand window is a relatively level plain cratered with a fairly large number of craters of the 5 to 50 foot variety, and some ridges—small, 20, 30 feet high, I would guess, and literally thousands of little 1 and 2 foot craters around the area. We see some angular blocks out several hundred feet in front of us that are probably 2 feet in size and have angular edges. There is a hill in view, just about on the ground track ahead of us. Difficult to estimate, but might be a half a mile or a mile.

Charlie Duke (CAPCOM)

Roger, Tranquility. We copy. Over.

Michael Collins (CMP)

Sounds like it looks a lot better than it did yesterday —

Michael Collins (CMP)

— at that very low Sun angle. It looked rough as a cob then.

Neil Armstrong (CDR)

It really was rough, Mike. Over the targeted landing area, it was extremely rough, cratered, and large numbers of rocks that were probably some, many larger than 5 or 10 feet in size.

Michael Collins (CMP)

When in doubt, land long.

Charlie Duke (CAPCOM)

Tranquility, Houston. After you get through this P57, we'd like an E memory dump. Over.

Buzz Aldrin (LMP)

Roger. After this first P57, you want an E memory dump.

Charlie Duke (CAPCOM)

Columbia, Houston. We have a P22 update for you, if you're ready to copy. Over.

Charlie Duke (CAPCOM)

Roger, Mike. T1, 104 32 18; T2, 104 37 28. And that is 4 miles south. This is based on a targeted landing site. Over.

Michael Collins (CMP)

Okay. Roger. Understand based on a targeted landing site; T1, 104 32 18; T2, 104 37 28, and 4 miles south.

Michael Collins (CMP)

Do you have any idea whether they landed left or right of center line? Just a little bit long, is that all we know?

Charlie Duke (CAPCOM)

Apparently that's about all we can tell. Over.

Charlie Duke (CAPCOM)

Tranquility, Houston —

Neil Armstrong (CDR)

And, Houston, our mission timer is now reading 902 34 47 and static.

Charlie Duke (CAPCOM)

Roger. Copy your mission timer's now static. It—Say again the time?

Charlie Duke (CAPCOM)

Roger. Copy, Tranquility. That gravity align looked good to us. We see you recycling.

Buzz Aldrin (LMP)

Well, no. I was trying to get time, 16 65 out, and somehow it proceeded on to the 622 before I could do a VERB 32 ENTER. I want to log a time here, and then I'd like to know whether you want me to proceed on the torquing angles or to go back and reenter again before torquing. Over.

Charlie Duke (CAPCOM)

Tranquility, Houston. We'd like you to recall P57 and run through the gravity align one more time. Over.

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Buzz Aldrin (LMP)

Roger. I concur with that.

Charlie Duke (CAPCOM)

Roger, Tranquility. For the mission timer, two suggestions. Set the circuit breaker, panel 11; also reset and attempt to start. That nine in the first digit might have something to do with it. Over.

Neil Armstrong (CDR)

Okay. We've tried both of those. If the circuit breaker is in when I reset the—put it in RESET, I get 902 04 40. When I release it now, I get 902 04 49. I'm going to cycle the circuit breaker.

Neil Armstrong (CDR)

I cycled the circuit breaker and got all nines. And we'll not now reset from all nines.

Charlie Duke (CAPCOM)

Tranquility, Houston. We'll research this problem and be back with you momentarily on the mission event time—correction, the mission timer.

Neil Armstrong (CDR)

I'd say the color of the—The local surface is very comparable to that we observed from orbit at this Sun angle, about 10 degrees Sun angle, or that nature. It's pretty much without color. It's gray, and it's a very white, chalky gray, as you look into the zero phase line; and it's considerably darker gray, more like a ash—ashen gray as you look out 90 degrees to the Sun. The—Some of the surface rocks in close here that have been fractured or disturbed by the rocket engine plume are coated with this light gray on the outside; but where they've been broken, they display a dark—very dark gray interior; and it looks like it could be country basalt.

Charlie Duke (CAPCOM)

Roger, Tranquility. We see the NOUN 93, VERB 34.

Buzz Aldrin (LMP)

Roger. I assume you wanted it. Roger.

Charlie Duke (CAPCOM)

Tranquility, Houston. Please vent fuel and OX again. Over. It's building back up.

Charlie Duke (CAPCOM)

Tranquility, Houston. You can open both fuel and OX vent now. Over.

Buzz Aldrin (LMP)

Houston, Tranquility standing by for GO on a AGS to PGNS align and a lunar align. Over.

Charlie Duke (CAPCOM)

Tranquility, Houston. You are GO for the AGS to PGNS align and a lunar align. Over.

Charlie Duke (CAPCOM)

Tranquility, Houston. Please vent the fuel. It's increasing rapidly. Over.

Neil Armstrong (CDR)

We show 30 psi in the fuel and 30 in the oxidizer.

Charlie Duke (CAPCOM)

Roger. We're reading somewhat different than that. Stand by.

Neil Armstrong (CDR)

The fuel temperature is reading 64 in the descent, and the oxidizer—that's descent 2—and the oxidizer is off scale low. Descent 1 is showing 61 in the fuel and 65 in the oxidizer.

Charlie Duke (CAPCOM)

Roger. Stand by. Tranquility, Houston. Please take the fuel vent switch and hold it open. Over.

Neil Armstrong (CDR)

Okay. We're holding it open. Indicating about 24 psi on board.

Neil Armstrong (CDR)

Now indicating 20 psi in the fuel side.

Buzz Aldrin (LMP)

Now indicating 15 psi in both tanks.

Charlie Duke (CAPCOM)

Tranquility, Houston. If you haven't done so, you can release the fuel vent switch now. Over.

Charlie Duke (CAPCOM)

Tranquility, Houston. We have indication that we've frozen up the descent fuel helium heat exchanger, and there's some fuel trapped in the line between there and the valves; and the pressure we're looking at is increasing there. Over.

Neil Armstrong (CDR)

Roger. Understand.

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Spoken on July 20, 1969, 8:42 p.m. UTC (50 years, 1 month ago). Link to this transcript range is: Tweet

Charlie Duke (CAPCOM)

Tranquility Base, Houston. If you have not done so, please close both fuel and OX vents now. Over.

Neil Armstrong (CDR)

From the surface, we could not see any stars out the window; but out my overhead hatch, I'm looking at the Earth. It's big and bright and beautiful. Buzz is going to give a try at seeing some stars through the optics.

Charlie Duke (CAPCOM)

Roger, Tranquility. We understand. Must be a beautiful sight. Over.

Charlie Duke (CAPCOM)

Columbia, Houston. Two minutes to LOS. You're looking great going over the hill. Over.

Michael Collins (CMP)

Okay. Thank you. Glad to hear the system's looking good. You have a suggested attitude for me? This one here seems all right.

Michael Collins (CMP)

Let me know when it's lunch time, will you?

Charlie Duke (CAPCOM)

Columbia, Houston. You got a good attitude right there.

Charlie Duke (CAPCOM)

Tranquility Base, Houston. If you want me to, I can give you a hack on the mission time, every 30 minutes. Over.

Charlie Duke (CAPCOM)

Tranquility, Houston. I'm counting down to T3 time. If you'd like to give me a hack, we can set up an event timer. Over.

Buzz Aldrin (LMP)

Okay. How about counting up?

Charlie Duke (CAPCOM)

Roger. You want it counting up? Stand by.