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LIBS confirms the presence of sulphur on the lunar surface

isro.gov.in

51–60 of 90 posts

Re: LIBS confirms the presence of sulphur on the lunar surface

#51
post #32
post #17

Earlier quoted context omitted.

They certainly won't find water on a 60C surface.

Why not? Plenty of 60C water on the earth's surface.

Is there? Hottest surface temp recorded on earth was 56.7C, no? And Death Valley isn't known for the presence of water (when it's anywhere close to that hot).

Re: LIBS confirms the presence of sulphur on the lunar surface

#52
post #43
post #4

There's a flurry on new info. In particular the variance of surface temperature at the lunar south pole, from 60 degree Celsius on the lunar surface, to -10 degree Celsius if you probe just 8cm below the surface https://nitter.net/pic/orig/media%2FF4hsyEQaEAAB-AS.png A whole seventy degree temperature difference over such a small height delta. There were a bunch of scientists trying to explain this on Indian news TV…

Please edit provocations and swipes out of your comments here. The provocation "shithole" led to a bunch of flamewar that I'm certain you didn't intend, and yet your comment is responsible for starting it. (I've detached those subthreads as offtopic and collapsed them, but they can be found at the bottom of the page.) The site guidelines specifically include rules to prevent this kind of thing, so it would be good to…

I felt like it was okay-ish given he immediately qualified his own, nearby hometown with the same descriptor. I think it changed the effect from discriminatory to almost a term of chagrined endearment which lent weight to his subsequent commentary.

Would I have written it myself? Probably not, especially given who recently popularized the term "shithole". But I think as a rhetorical device it did what he wanted it to in his writing.

Re: LIBS confirms the presence of sulphur on the lunar surface

#53
post #32
post #17

Earlier quoted context omitted.

They certainly won't find water on a 60C surface.

Why not? Plenty of 60C water on the earth's surface.

but not in the vacuum. At 60C on the moon, the water is just gas and would leave the moon a long time ago.

Re: LIBS confirms the presence of sulphur on the lunar surface

#54
post #32

Earlier quoted context omitted.

Why not? Plenty of 60C water on the earth's surface.

Is there? Hottest surface temp recorded on earth was 56.7C, no? And Death Valley isn't known for the presence of water (when it's anywhere close to that hot).

Hot springs in volcanically active areas?

Re: LIBS confirms the presence of sulphur on the lunar surface

#55
post #32

Earlier quoted context omitted.

Why not? Plenty of 60C water on the earth's surface.

Is there? Hottest surface temp recorded on earth was 56.7C, no? And Death Valley isn't known for the presence of water (when it's anywhere close to that hot).

> Hottest surface temp recorded on earth was 56.7C, no?

Hottest air temperature at just above surface level; excluding several localized extremes like measurements around vulcanos or asphalt roads.

Asphalt surfaces can easily reach 60+°C on days with direct sunlight and little to no wind, and vulcanos supply new surface all the time with temperatures far north of 100°C.

Re: LIBS confirms the presence of sulphur on the lunar surface

#56
post #4

There's a flurry on new info. In particular the variance of surface temperature at the lunar south pole, from 60 degree Celsius on the lunar surface, to -10 degree Celsius if you probe just 8cm below the surface https://nitter.net/pic/orig/media%2FF4hsyEQaEAAB-AS.png A whole seventy degree temperature difference over such a small height delta. There were a bunch of scientists trying to explain this on Indian news TV…

Honestly super happy for India for pulling this off. People don't seem to acknowledge the amount of science that's been coming out of India for a long time now and I hope this enlightens people a little on the fact that the country has a lot of strong intellect to share with the world.

Seconded. India has some terrific development culture.

Re: LIBS confirms the presence of sulphur on the lunar surface

#57

> ISRO announced the rover’s LIBS results definitively confirm the presence of sulfur at the landing site. Additionally, preliminary scans detect traces of aluminum, iron, calcium, chromium, titanium, manganese, silicon, and oxygen in the soil. Further hydrogen detection efforts are underway. What about hydrogen? No hydrogen means no water where they're currently landed, right?

The reason people think there will be water is that when water evaporates on the moon, it won't be instantly lost. Instead, it will bounce around for a while before it is (probabilistically) lost. If/when it hits a surface that's below freezing point in vacuum (~200K), it can instead freeze and stick to that surface.

There are believed to be such surfaces in permanently shadowed craters on the poles of the moon. They won't find any in any place where the rover can charge, but they might do short trips into shadowed spots, I don't know.

Re: LIBS confirms the presence of sulphur on the lunar surface

#58

Earlier quoted context omitted.

> Is is about their DNA (nature) or their culture (nurture)? It's always about culture. The British Empire employed a strategy of divide-and-rule: it encouraged and amplified the caste system, and also encouraged the partitioning of society along religious lines. On top of that, it layered the English class system, and a horribly-botched partition. I don't mean to imply that Indians don't have agency; they've had 80…

Things are getting worse? On what metric?

Authoritarianism, wealth distribution, land distribution, belligerent nationalism, caste and religious intolerance. Take your pick.

80 years isn't a long time, and over many years I expect it will be sorted out.

/me not been to India for 40 years, opinions based mostly on mainstream news

Re: LIBS confirms the presence of sulphur on the lunar surface

#60
post #4

There's a flurry on new info. In particular the variance of surface temperature at the lunar south pole, from 60 degree Celsius on the lunar surface, to -10 degree Celsius if you probe just 8cm below the surface https://nitter.net/pic/orig/media%2FF4hsyEQaEAAB-AS.png A whole seventy degree temperature difference over such a small height delta. There were a bunch of scientists trying to explain this on Indian news TV…

On that graph: isn't it conventional for the independent variable (in this case, depth) to be on the x-axis?

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