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Artemis II Launch Day Updates

nasa.gov

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Re: Artemis II Launch Day Updates

#761

Post by marcus_holmes »

BDPW wrote: post #748
marcus_holmes wrote: post #708

Earlier quoted context omitted.

I am in a gravitational field. I have no idea what my acceleration is, I just know that I feel 1G (I could be falling in a stronger gravity and only feel 1G, or I could be climbing in a weaker gravity and feel 1G). The only way of determining it is to see if I'm moving relative to the stuff around me. Even then, that's not definite - I could be in an elevator and everything around me is also accelerating. I'm not dis…

You're conflating coordinate and proper acceleration.

I don't think I understand the difference. I have always been told that acceleration is change in velocity over time. Is that wrong? Are there other types of acceleration?

Re: Artemis II Launch Day Updates

#762

Post by eru »

hghid wrote: post #7

Even though you could question the whole Artemis concept, it's still extremely exciting watching the countdown with my son. I just missed the original Apollo flights and had assumed I would never see a moon landing in my lifetime. We may well not have a landing for quite some time yet, but it's still cool to see a Moon bound rocket standing on the launchpad...

> I just missed the original Apollo flights and had assumed I would never see a moon landing in my lifetime.

The PR Chinese might want to go for a significant landing, too, just for the prestige?

Re: Artemis II Launch Day Updates

#763

Post by hsbauauvhabzb »

justinator wrote: post #758
hsbauauvhabzb wrote: post #717

Earlier quoted context omitted.

I’d prefer to cheer for something that’s primary objective isn’t killing people. So there’s that, too.

Just a friendly reminder that midterms are this year.

If we survive that long.

Re: Artemis II Launch Day Updates

#764

Post by marcus_holmes »

hcs wrote: post #735
marcus_holmes wrote: post #721

Earlier quoted context omitted.

I am standing on the ground. I feel 1G acceleration. My speed is not changing. How much am I accelerating?

You are more quickly being carried by the ground further from where you would otherwise be. Hope that clears it up.

Not really, no. The ground isn't moving. I'm not moving. I get that if the ground wasn't there, I would be moving, but that's not the same thing, I think?

Like I said in another response, I have always been told that acceleration is change in velocity over time. If my velocity is not changing, I don't understand how I'm accelerating?

I do understand that gravity exerts a force that is indistinguishable from acceleration, which was my original point. But that doesn't mean it is acceleration.

Re: Artemis II Launch Day Updates

#765

Post by __loam »

mrexroad wrote: post #480
Apocryphon wrote: post #390

Earlier quoted context omitted.

Rather unfortunate timing that the original Apollo moon landing also happened in the middle of the Vietnam War.

Well, when you zoom out a bit, it’s not a stretch to say that both Apollo and Vietnam shared the same goal of countering the USSR.

The Vietnam War was us violating Vietnamese sovereignty and self-determination and losing.

Re: Artemis II Launch Day Updates

#766

Post by ActorNightly »

gus_massa wrote: post #242
russdill wrote: post #198

Earlier quoted context omitted.

An article written by a "Polish-American web developer, entrepreneur, speaker, and social critic" says it's not safe to fly. And? What do the astronauts flying on board with significantly more information say?

There is also an old article written by a professional bongo player about the Challenger explossion. He has other hobbies, but he was not a Rocket Scientist https://www.nasa.gov/history/rogersrep/v2appf.htm The takeaway, is that the software was fine, but other systems like the main engine used too much cutting edge technology and have a lot of unexpected failure modes and too many problems like partialy broken parts…

Anyone can write an article when the hindsight is 20-20. You can make all sorts of justifications about what happened.

Much different than predicting future.

Re: Artemis II Launch Day Updates

#767

Post by ActorNightly »

glenstein wrote: post #678
russdill wrote: post #256

Earlier quoted context omitted.

I would, except all Maceij is providing is "vibes" and much of the official report is redacted.

That's not even remotely true. They talked in great detail about heat shield fragmentation Artemis I, it's failure modes, the prospect of it getting worse with new designs and a number of other things at much greater detail than you are. Your comments show a fraction of the effort and detail of the thing you're criticizing and you could have made your best argument five comments ago if you were ever actually going to…

You are obviously very invested in the fact that someone who is going against the grain of the obviously bad, overly buerocratic government agency MUST be correct (otherwise, in the case you actually gave a fuck about the truth, you would be researching statements from NASA and comparing the reports)

If that is so, put your money where you mouth is and place a bet on polymarket. If you are too scared to do so, then admit it to yourself, and understand that you don't believe this shit anyway.

Because you being a cuck for a contrarian for the sole reason that he is going against the grain is basically the same as Joe Rogan being anti-vaxx because its trendy and cool to think government=bad.

Re: Artemis II Launch Day Updates

#768

Post by jojobas »

JumpCrisscross wrote: post #300

April 6: flyby April 10: splashdown After that, the exciting work will be in Starship making LEO and testing propellant transfer (a humanity first) [1] and Blue Origin testing its rocket and lunar lander [2], both scheduled for 2026, to enable Artemis II (EDIT: III), currently scheduled—optimistically, in my opinion—for next year. [1] https://en.wikipedia.org/wiki/List_of_Starship_launches#Futu... [2] https://en.wiki…

HLS isn't going anywhere.

Re: Artemis II Launch Day Updates

#769

Post by tatersolid »

qingcharles wrote: post #38
hghid wrote: post #7

Even though you could question the whole Artemis concept, it's still extremely exciting watching the countdown with my son. I just missed the original Apollo flights and had assumed I would never see a moon landing in my lifetime. We may well not have a landing for quite some time yet, but it's still cool to see a Moon bound rocket standing on the launchpad...

I don't know if it's feasible for you, but if you can, try to take your kid to see a live rocket launch. The TV is grossly unable to display how awesome these things are in person.

Concur. My kids and watched a “small” Falcon 9 launch from the mainland park nearest the pad at Cape Canaveral. The noise alone was astonishing; bring binoculars to see detail.

Re: Artemis II Launch Day Updates

#770

Post by ActorNightly »

njarboe wrote: post #508
jgord wrote: post #208

Regardless of whether this particular mission is perfectly planned, this is precisely the kind of thing that will help humanity outgrow the dark age of war, inequality and climate mismanagement. It is a noble endeavor - science, engineering and peaceful exploration hold the keys to our survival and prosperity. It is also important psychologically to our survival - a reminder there is a bigger pie, that we can solve h…

I think these space projects are great, can create much good will, and give people dangerous things to do that are worth risking the danger for. But war, inequality, and climate mismanagement are political problems that are not going to be solved (if they need to be solved) by science and engineering (the first two at least).

They can absolutely be solved by science and engineering, people just need to stop being so fucking afraid to break the rules to do whats right.
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