When did Armstrong step on the moon?

When did Armstrong step on the moon?

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spangle82

Original Poster:

322 posts

246 months

Friday 19th July 2019
quotequote all
Google tells me that the Eagle landed on 20 July at 20.17 UTC, and it also says that UTC is one hour behind BST. Does that mean that the 50th anniversary of the landing is tomorrow at 7.17pm BST? And if so what time would Armstrong have taken his famous step?

Id like to know as 50 years ago tomorrow night, at sometime, I was woken up to come down and witness it smile

InitialDave

12,235 posts

126 months

Friday 19th July 2019
quotequote all
It would be the other way round. 20:17 UTC tomorrow would be 21:17 here.

e.g. as I type this, it has just clicked over 22:37 UTC, but it is 23:37 to me.

Zirconia

36,010 posts

291 months

Saturday 20th July 2019
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Stepped on, early am
http://news.bbc.co.uk/onthisday/hi/dates/stories/j...
They had stuff to do before getting out the door hence delay from landing time.

well worth a look if you have not seen it. Running in real time (or you can fast forward and rewind).
https://apolloinrealtime.org/11/

Edited by Zirconia on Saturday 20th July 08:19

spangle82

Original Poster:

322 posts

246 months

Saturday 20th July 2019
quotequote all
Zirconia said:
Stepped on, early am
http://news.bbc.co.uk/onthisday/hi/dates/stories/j...
They had stuff to do before getting out the door hence delay from landing time.
Yes, I remembered they stayed in the LEM for a while before venturing out.

The BBC link you kindly posted says 'The astronaut stepped onto the Moon's surface, in the Sea of Tranquility, at 0256 GMT, nearly 20 minutes after first opening the hatch on the Eagle landing craft.'

- which I think means the exact moment of the 50th anniversary is 3.56 (BST) tomorrow morning?

sleepezy

1,946 posts

241 months

Saturday 20th July 2019
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3:56 am BST on 21st from...

hanging on my study wall

spangle82

Original Poster:

322 posts

246 months

Saturday 20th July 2019
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Brilliant!

Beati Dogu

9,193 posts

146 months

Saturday 20th July 2019
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Here's a simulation of what Armstrong saw as the Eagle came in to land:

https://www.youtube.com/watch?=2&v=YPXitv2CRJs

Gandahar

9,600 posts

135 months

Saturday 20th July 2019
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Beati Dogu said:
Here's a simulation of what Armstrong saw as the Eagle came in to land:

https://www.youtube.com/watch?=2&v=YPXitv2CRJs
without the dust?


V8LM

5,265 posts

216 months

Sunday 21st July 2019
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I know it is said that Armstrong said “It’s one small step for a man, one giant leap for mankind” and that the ‘a’ was lost in static, but did he really or was that what he believed he had said?

The timing doesn’t quite fit with an ‘a’. Maybe someone pointed out that the use of man without the definite article is the same meaning as mankind.

Just curious. Epic weekend of celebrations and stories. The BBC World Service’s 13 Minutes to the Moon is a great listen.

Zirconia

36,010 posts

291 months

Sunday 21st July 2019
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I think there has been a bit of obsession over that. Personally the feat itself and not really worried over the words.


spangle82

Original Poster:

322 posts

246 months

Sunday 21st July 2019
quotequote all
V8LM said:
I know it is said that Armstrong said “It’s one small step for a man, one giant leap for mankind” and that the ‘a’ was lost in static, but did he really or was that what he believed he had said?

The timing doesn’t quite fit with an ‘a’. Maybe someone pointed out that the use of man without the definite article is the same meaning as mankind.
Seeing as he'd just travelled 240,000 miles, taken a high risk of death, been the first man to step on the moon and had the entire world watching him, I can cut him some slack for stumbling on one letter. Or maybe the radio cut out momentarily, or Buzz operated something that interfered. It doesn't really matter. It seems to be a condition today that we fret over 0.01% and ignore the 99.99%.

Zirconia

36,010 posts

291 months

Sunday 21st July 2019
quotequote all
Well, you can find his words in here.
https://apolloinrealtime.org/11/
Really is a work of art, you can drill down to the exact moment. Just click now and scroll back a tad on the audio, there is text description as well.


Just had a listen, these are tapes that have been made available to Ben Feist (web site designer) and are very clear.

Edited by Zirconia on Sunday 21st July 09:31


Edited by Zirconia on Sunday 21st July 09:31

V8LM

5,265 posts

216 months

Sunday 21st July 2019
quotequote all
spangle82 said:
Seeing as he'd just travelled 240,000 miles, taken a high risk of death, been the first man to step on the moon and had the entire world watching him, I can cut him some slack for stumbling on one letter. Or maybe the radio cut out momentarily, or Buzz operated something that interfered. It doesn't really matter. It seems to be a condition today that we fret over 0.01% and ignore the 99.99%.
As said, just curious. And I wouldn’t view it is high as 0.01%.

Zirconia

36,010 posts

291 months

Wednesday 24th July 2019
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10 hours to splash down. 50 years ago that is. Speed increasing, only Mach 7.1 at the moment.

Eric Mc

122,856 posts

272 months

Wednesday 24th July 2019
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Zirconia said:
10 hours to splash down. 50 years ago that is. Speed increasing, only Mach 7.1 at the moment.
Although using Mach numbers to describe speed in the vacuum of space is not really correct as Mach is described as "the speed of sound in air".

However, it is a sort of useful yardstick to use if you want to impress people with how fast spacecraft move in respect of the earth.

Zirconia

36,010 posts

291 months

Wednesday 24th July 2019
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Sorry, 8200 or so feet per second.

Eric Mc

122,856 posts

272 months

Wednesday 24th July 2019
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NASA almost invariably used "feet per second" as their velocity measure in that era. They still do in certain circumstances.

Halmyre

11,562 posts

146 months

Wednesday 24th July 2019
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spangle82 said:
V8LM said:
I know it is said that Armstrong said “It’s one small step for a man, one giant leap for mankind” and that the ‘a’ was lost in static, but did he really or was that what he believed he had said?

The timing doesn’t quite fit with an ‘a’. Maybe someone pointed out that the use of man without the definite article is the same meaning as mankind.
Seeing as he'd just travelled 240,000 miles, taken a high risk of death, been the first man to step on the moon and had the entire world watching him, I can cut him some slack for stumbling on one letter. Or maybe the radio cut out momentarily, or Buzz operated something that interfered. It doesn't really matter. It seems to be a condition today that we fret over 0.01% and ignore the 99.99%.
Heh, I like the idea of a miffed Aldrin sabotaging Armstrong's big moment. I bet he hid a piece of whiffy haddock in his spacesuit as well.

Zirconia

36,010 posts

291 months

Wednesday 24th July 2019
quotequote all
Eric Mc said:
NASA almost invariably used "feet per second" as their velocity measure in that era. They still do in certain circumstances.
Yes I know. I live not in that world. For me a Mach number is something for me that is easier relate to. as if MPH.

Mach 7.5 now. Increasing (yes I know it increases).

Wake up in just over 2 hours.

Eric Mc

122,856 posts

272 months

Wednesday 24th July 2019
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It's just like rolling a ball down a very, very long hill.