Israel’s Beresheet Spacecraft Moon Landing Attempt Appears to End in Crash • Hacker News Board

Re: Israel’s Beresheet Spacecraft Moon Landing Attempt Appears to End in Crash

#161

Post by Cogito » Fri, Apr 12, 2019, 1:01 AM UTC

rickycook wrote: post #150

rtkwe wrote: post #126

Earlier quoted context omitted.

Yeah, they use a dead simple solid-fuel rocket based on their ballistic missiles that can only really hit LEO and has a pretty limited payload.

implying that makes it unworthy of praise?

In the same way that 'getting to space' is not nearly as impressive as 'getting to orbit', there is another large step to 'getting to trans-lunar injection'.

It's perfectly reasonable to show the differences in two achievements, and doing so doesn't imply the derision of either.

In any case, I love that so many people around the world are able to participate in the exploration of our sky, and will celebrate every single step that makes it easier and cheaper, regardless of where the people making it happen happen to live.

Re: Israel’s Beresheet Spacecraft Moon Landing Attempt Appears to End in Crash

#162

Post by pauldino » Fri, Apr 12, 2019, 1:38 AM UTC

globuous wrote: post #110

droithomme wrote: post #81

Earlier quoted context omitted.

US, USSR, and China have successfully landed on the moon. Japan, ESA, India, and SpaceIL all have crashed on the moon (counting as reached). https://en.wikipedia.org/wiki/List_of_spacecraft_on_the_Moon

That being said, ESA landed on a comet. Which is arguably a much harder shot to make ;) literally, you shoot, wait a decade, and cross your fingers during landing ^^

And even if they didn’t ever manage to land on the moon, ESA did once land on a moon.

https://en.m.wikipedia.org/wiki/Huygens_(spacecraft)

Re: Israel’s Beresheet Spacecraft Moon Landing Attempt Appears to End in Crash

#163

Post by deathhand » Fri, Apr 12, 2019, 2:10 AM UTC

dmitryminkovsky wrote: post #89

I don't understand how you even attempt to recover from failures that occur during a descent like this. Latency to the moon appears to be 1.3 seconds. How much time do you have to do anything?

Multiple 'if' statements and then backup modules loaded with more 'ifs'

Re: Israel’s Beresheet Spacecraft Moon Landing Attempt Appears to End in Crash

#164

Post by occupodd » Fri, Apr 12, 2019, 2:16 AM UTC

RIMR wrote: post #114

brandmeyer wrote: post #113

Earlier quoted context omitted.

My point really wasn't that these folks got what's coming to them for their arrogance. My point is that this isn't a mission of international we're-all-in-this-together cooperation. It is very much viewed by the Israeli's running the mission as a part of the nation-state space race.

Which means we can now judge the mission by the merits of the nation-state it represents. Israel is a violent apartheid state that is attempt to ethnically cleanse its population. Since the mission held zero scientific value, I'm glad it crashed.

I'm glad it crashed too!

Re: Israel’s Beresheet Spacecraft Moon Landing Attempt Appears to End in Crash

#165

Post by azinman2 » Fri, Apr 12, 2019, 2:17 AM UTC

aeternus wrote: post #146

azinman2 wrote: post #129

Earlier quoted context omitted.

Meanwhile he seems to lack any doubt or humility in anything involving Tesla...

He's been pretty upfront about his date prediction abilities: https://www.businessinsider.com/elon-musk-blames-missed-mode...

I was more thinking about self driving

Re: Israel’s Beresheet Spacecraft Moon Landing Attempt Appears to End in Crash

#166

Post by nayyad » Fri, Apr 12, 2019, 2:17 AM UTC

So now you want to convince me that in 1969 they could man land on the moon and then come back to earth and in 2019 they still trying to nail down the tech ?

Re: Israel’s Beresheet Spacecraft Moon Landing Attempt Appears to End in Crash

#167

Post by Ice_cream_suit » Fri, Apr 12, 2019, 2:23 AM UTC

Great name ! In Hebrew, it means " In the beginning..."

Re: Israel’s Beresheet Spacecraft Moon Landing Attempt Appears to End in Crash

#168

Post by outside1234 » Fri, Apr 12, 2019, 2:33 AM UTC

Karma's a bitch

Re: Israel’s Beresheet Spacecraft Moon Landing Attempt Appears to End in Crash

#169

Post by outside1234 » Fri, Apr 12, 2019, 2:35 AM UTC

jesseab wrote: post #16

It's time to retire the tired old nation-state space-race narrative. We're all in this together people. Their failure is our failure.

We don't cheer for countries practicing Apartheid.

Re: Israel’s Beresheet Spacecraft Moon Landing Attempt Appears to End in Crash

#170

Post by zymhan » Fri, Apr 12, 2019, 2:43 AM UTC

Hamuko wrote: post #52

zymhan wrote: post #10

Earlier quoted context omitted.

When you're floating along on a stable orbit not about to impact the surface. Or with more time to recover from the outage before landing. If it happens within the last minute (wild estimation) then you have little time to recover the lost velocity.

But you're still having an engine failure when the engine is far away from anyone that could potentially start mending it.

"failure" does not necessarily imply it is permanently disabled. It just means the engine stopped working as expected at some point.

Obviously they restarted it after this failure so it was not a complete breakdown of the engine.