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Commercial lunar lander presumed lost after moon landing attempt

cnn.com

51–60 of 190 posts

Re: Commercial lunar lander presumed lost after moon landing attempt

#51
post #32

There were 2 other commercial landing that blacked out just before landing must be something they all didn’t take care of or maybe nasa is holding out some secret info

Once is chance, twice is coincidence, three times ...

... they're crashing on purpose? What are you trying to imply?

Re: Commercial lunar lander presumed lost after moon landing attempt

#52
post #10

It was heartbreaking to see the control room during the first few minutes after the landing. Imagine a project you've worked on for years going kaput and you won't even know why. None of these engineers will find sleep tonight. I hope some moon orbiter can take pics of the landing site soon.

> you won't even know why Not necessarily. We've frequently been able to determine the cause of unmanned spacecraft failures via telemetry and/or post-failure investigation. For example, https://en.wikipedia.org/wiki/Mars_Climate_Orbiter famously failed because NASA used metric and a vendor did not.

Foot pound second is such a weird unit. How did that pass the quality controls?

I also don’t understand how one team of educated engineers could decide to use imperial units instead of metric units.

Re: Commercial lunar lander presumed lost after moon landing attempt

#54

Earlier quoted context omitted.

> you won't even know why Not necessarily. We've frequently been able to determine the cause of unmanned spacecraft failures via telemetry and/or post-failure investigation. For example, https://en.wikipedia.org/wiki/Mars_Climate_Orbiter famously failed because NASA used metric and a vendor did not.

Foot pound second is such a weird unit. How did that pass the quality controls? I also don’t understand how one team of educated engineers could decide to use imperial units instead of metric units.

As a former mechanical engineer, any calculations involving pounds in any form I pretty much always converted to metric and then back at the end if need-be. The trinity of pound-mass, pound-force, and slugs is incredibly easy to screw up--at least as a student.

Re: Commercial lunar lander presumed lost after moon landing attempt

#55
post #34

Earlier quoted context omitted.

Bonus points if you attach some to plaques and give them away to various nations which then lose some of them.

"Stolen and missing Moon rocks" - https://en.wikipedia.org/wiki/Stolen_and_missing_Moon_rocks

The Wikipedia article is missing another case. A rock taken by Apollo 17 from Taurus-Littrow was gifted by Richard Nixon to Portugal in 1973. It was in exhibition at the Lisbon Planetarium but got stolen 11 July 1985.

https://www.jn.pt/nacional/portugal-teve-uma-rocha-lunar-mas...

So next time some suspicious character in Lisbon, proposes to sell you a piece of the Moon...it might be real.

Re: Commercial lunar lander presumed lost after moon landing attempt

#56
post #42

Earlier quoted context omitted.

This is why I do not understand people who would jump at the chance to live on a permanent Martian or Lunar colony.

I would direct you to another Sagan quote as part of Wanderers - a short film by Erik Wernquist : https://vimeo.com/108650530 For all its material advantages, the sedentary life has left us edgy, unfulfilled. Even after 400 generations in villages and cities, we haven’t forgotten. The open road still softly calls, like a nearly forgotten song of childhood. We invest far-off places with a certain romance. This appeal,…

Thank you for incidentally reminding me of https://youtu.be/zSgiXGELjbc

Re: Commercial lunar lander presumed lost after moon landing attempt

#57

Earlier quoted context omitted.

Obligatory Sagan quote: > Look again at that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, ev…

This is why I do not understand people who would jump at the chance to live on a permanent Martian or Lunar colony.

I think a lot of people don't appreciate just how completely shit space is.

Re: Commercial lunar lander presumed lost after moon landing attempt

#58
post #10

It was heartbreaking to see the control room during the first few minutes after the landing. Imagine a project you've worked on for years going kaput and you won't even know why. None of these engineers will find sleep tonight. I hope some moon orbiter can take pics of the landing site soon.

> you won't even know why Not necessarily. We've frequently been able to determine the cause of unmanned spacecraft failures via telemetry and/or post-failure investigation. For example, https://en.wikipedia.org/wiki/Mars_Climate_Orbiter famously failed because NASA used metric and a vendor did not.

Or another example, ESA's ExoMars lander cut its parachute and deployed itself 3.7 km above ground due to IMU saturation, thinking it was already landed.

https://www.esa.int/Science_Exploration/Human_and_Robotic_Ex...

Re: Commercial lunar lander presumed lost after moon landing attempt

#59

Earlier quoted context omitted.

This was a commercial landing though. I guess its not there to do science or improve the human race. What was behind it?

It was a commercial craft carrying a payload from a few sources, including a rover from JAXA, the Japanese space agency, and a second rover built by the UAE.

Do the rovers at least still work?

Re: Commercial lunar lander presumed lost after moon landing attempt

#60

Earlier quoted context omitted.

This is why I do not understand people who would jump at the chance to live on a permanent Martian or Lunar colony.

I think a lot of people don't appreciate just how completely shit space is.

I remember an astronaut describing being in orbit as permanently being on an amusement park ride.

I went like: "oh..."

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