Space and Stuff : It's Big

I understand the maths in the core positioning/trajectories is Newtonian based (Laws of Motion) so relatively straightforward.
Some of the time/position sensitive critical calculations will probably acknowledge relativity for the precision
I love this quote from Bill Anders who flew on Apollo 8 (and took the famous Earthrise photo). Talking about Commander Frank Borman vomiting in zero gravity and how it demonstrated Newton’s laws of motion etc;

“The stuff was floating around. I grabbed an emergency oxygen mask because the smell was really bad and clamped it on because I didn't want to get sick as well...

"But I do remember watching this blob of vomitus drifting up out of the navigation bay; Lovell and I were up in the -- flying the spacecraft. And it had a three dimensional oscillation to it and I reverted to my scientific physics training and I was just amazed at the three-dimensional oscillation of this thing. You know, you don't see that on Earth because you can't simulate 0-G...

"And so I'm watching it and Lovell's sitting next to me and it's drifting kind of like this and then it split. It oscillated too much and in the laws of conservation and momentum, see, that the one piece that's going this way has to be balanced by the other piece going that way, and so we watched it and as it headed towards Lovell -- thank God -- and he was almost out of focus watching this thing splat onto his chest and spread out like a fried egg. So we spent, you know, a couple of hours going around the spacecraft with kind of paper wipes, like butterfly catchers trying to catch butterflies, mopping this stuff out of the air or off the walls.

"It was bad. You know it's amazing, after a while you didn't smell it. Not because the smell went away -- 'cause you get used to it. I guess a skunk can learn to live with himself."
 

A quite remarkable woman. She showed incredible restraint when she answered a PR call from Trump during the first ever all female EVA/spacewalk in 2019, along with Jessica Meir.

The leader of the free world congratulated her by saying ‘and this is the first time for a woman outside of the Space Station’. Koch was undertaking her third EVA at the time and women had been regularly walking in space since 1984.
 
Unbelievable, hard to imagine how clever she must be. Makes me feel a bit thick reading this
Yep I know what you mean. Most if not all astronauts are polymaths of some sort. The very early Americans were test pilots but from Gemini onwards they had to have at the very least a Bachelor’s degree in a relevant field.

These days they’re invariably multi lingual, educated to doctorate level, experts in first aid, piloting, engineering, mechanics and have athlete levels of fitness.

I find it both inspiring and massively intimidating!
 
Yep I know what you mean. Most if not all astronauts are polymaths of some sort. The very early Americans were test pilots but from Gemini onwards they had to have at the very least a Bachelor’s degree in a relevant field.

These days they’re invariably multi lingual, educated to doctorate level, experts in first aid, piloting, engineering, mechanics and have athlete levels of fitness.

I find it both inspiring and massively intimidating!
Yes, during my career change I studied navigation and became a ships officer. I found celestial navigation both fascinating but extremey taxing on my brain, trying to plot the ships poistion on earth using the planets and spherical trigonometry is heavy duty.

But these NASA guys are just on a level I can't imagine. I have nothing but the utmost admiration.
 
Yes, during my career change I studied navigation and became a ships officer. I found celestial navigation both fascinating but extremey taxing on my brain, trying to plot the ships poistion on earth using the planets and spherical trigonometry is heavy duty.

But these NASA guys are just on a level I can't imagine. I have nothing but the utmost admiration.
Wow that’s impressive! Don’t think my head would be able to cope with that.

Blows my mind that they had a sextant aboard Apollo flights to help them navigate. Love this photo of Jim Lovell.

IMG_2005.webp
 
More interested in their reentry ATM, nobody's doing any moonwalking for another handful of years if they're lucky. A lot of assumptions were made about the reentry process with no validation testing but they're a higher level of idiot than me so hey-ho. Seat-of-the-pants stuff.

Today's key word is ablation.
 

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