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China lands rover on Mars

bbc.com

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Re: China lands rover on Mars

#141

Post by krasin »

cycomanic wrote: post #115
FpUser wrote: post #77

Earlier quoted context omitted.

>"It's one sin to steal" Every successful country at some point stole / conquered / forcefully took from others to achieve prosperity. Look at UK for example. They've raped half of the world. Then they were crying a river when the US stole from them. Now they are telling other countries not to do what they have done. Those other countries might listen when they will have "stolen" enough to be well on their own.

Also Germany, the "made in..." Label was invented in the UK to distinguish their products from the cheap German knock-offs. Later "made in Germany" became a sign of quality.

Obligatory reference to "Made in Japan" by the founder of Sony: https://www.amazon.com/Made-Japan-Akio-Morita-Sony/dp/045115...

TL,DR: Japanese went through this cycle as well. And I would say Chinese too, by now.

Re: China lands rover on Mars

#142

Post by xvilka »

chmod600 wrote: post #125

Does anyone have plans to land on Venus? Is that way more difficult or something?

Apart from Venus which is quite interesting, indeed, but very challenging goal, I hope there will be better exploration of Mercury, since it's rich in iron and closest to the Sun. It is a perfect fit for systematic monitoring of Sun's activity. Moreover, such proximity would make the energy density a big advantage in terms of the mission lifetime.

Re: China lands rover on Mars

#145

Post by simion314 »

hellbannedguy wrote: post #133
FooBarWidget wrote: post #132

Earlier quoted context omitted.

They steal research from "the many countries" that haven't been to Mars? That seems quite an odd accusation. You just handwave the need for evidence away as if such an accusation can be assumed to be true. Arresting people on charge of espionage doesn't mean that those people actually engaged in espionage: proper due process must be finished first before that conclusion can be drawn. Also, stealing trade secrets in c…

I'm to tired for a debate, but this is a start: https://defense.info/re-thinking-strategy/2020/10/the-fight-...

FYI , you know that US was caught spying on other countries, including economical espionage(on Airbus) and I remember I seen recently some video about US getting access to some Russian equipment and the hyper patriotic narrator ... now imagine I would invent some stupid accusation that SpaceX is built on tech stolent from Russia and airbus without any proof just some unrelated links about that a guy maybe stole some seeds or some documents that you can't trust because of the political and racist environment in US.

If the tech is stolen I suggest you either do some better work on presenting this or better wait for someone less lazy, more competent and with more knowledge in this domain to do it. Some US gov employee could either show or fabricate better evidence then you.

Re: China lands rover on Mars

#146

Post by chmod600 »

smitty1110 wrote: post #128
chmod600 wrote: post #125

Does anyone have plans to land on Venus? Is that way more difficult or something?

Not that I know of, Venus is kinda crazy. 90 ATM pressure, -1 pH acid rain, about 700 K temperatures at night, it's pretty absurd. Unless you want to make a probe out of solid Tungsten, you're probably out of luck. And good luck getting that out of low earth orbit, that would be stupidly heavy.

Would it help to have a burrowing probe? What are the subterranean conditions like?

Re: China lands rover on Mars

#147

Post by jillesvangurp »

pingec wrote: post #7

It's impressive how far China has come in just 2 decades. How significant is this achievement space technology wise? I still remember the first rover on Mars and it was a really big deal in my eyes back then.

The significance is that that space travel is becoming a commodity. In the recent past we had several countries attempting moon landings. The Chinese landed successfully. The Israelis had a failed mission recently. The Indians crashed (on purpose) a probe on the moon. The Japanese, Iranians, and probably a few others have each launched satellites into orbit. It's getting crowded there.

The other significant thing is that there is now a bit more urgency to the matter of getting humans back to the moon and eventually to Mars. The Chinese are preparing to set up their own space station and are obviously interested in going to the moon and Mars and they seem to have the technical capability to get there. It's a bit like the early days of the space age when NASA and the Russians were competing for getting there first. NASA seems busy fighting domestic battles for funding rather than getting stuff done. They got a lucky break with SpaceX having a bit more focus on that front and proposing something that might actually fly. Now they need to get serious about actually making that happen. If they don't, somebody else will.

Re: China lands rover on Mars

#148

Post by yosito »

smitty1110 wrote: post #128
chmod600 wrote: post #125

Does anyone have plans to land on Venus? Is that way more difficult or something?

Not that I know of, Venus is kinda crazy. 90 ATM pressure, -1 pH acid rain, about 700 K temperatures at night, it's pretty absurd. Unless you want to make a probe out of solid Tungsten, you're probably out of luck. And good luck getting that out of low earth orbit, that would be stupidly heavy.

What if you designed a probe like a medicine capsule, with an outer shell that's designed to melt, but a smaller rover inside that can survive the heat/acid/pressure?

Re: China lands rover on Mars

#149

Post by 4gotunameagain »

Animats wrote: post #130

China Daily has a nice animation of the landing process.[1] So far, though, no live video. [1] http://global.chinadaily.com.cn/a/202105/15/WS609f18aaa31024...

Ah, someone copied our homework again :)

I hope that more things on Mars are a net positive anyway, regardless the nation.

Re: China lands rover on Mars

#150

Post by dandelany »

tomrod wrote: post #136
k_sze wrote: post #121

Earlier quoted context omitted.

This makes me think about the way we define “harsh”. What’s actually so harsh about Mars? Let’s imagine some alien civilization tries to send a probe to Earth, they’d be saying things like: “Dude, that atmosphere is gonna burn our shit up before it even touches ground, if we’re not careful.” “Holy shit, what are these huge animals with long noses and big ears? They’re gonna destroy our probe if they walk over it.” “L…

Most of the dust is extremely sharp, not having water break up the edges.

No it’s not - aeolian processes do a fine job of weathering it. It is very fine dust, and somewhat toxic, but it is not sharp like lunar regolith is. https://medium.com/@adammann930/the-problem-with-dust-on-the...
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