Meh.

Put me in a decent thermal suit (nice and cosy) and I'll dangle from a balloon in the clouds of ammonia at 180K and 1bar for a while.

Happy as a clam.

At the 1bar altitude it's 180K.

Might want to wrap up.

>sounds on jupiter

Jupiter's a big place.

If you mean, what might it sound like at the point where the atrmospheric pressure is 1bar?

Lindal (1992) suggested that that's at a region where the temperature is 180K. I'd be cautious to expose my ear to 1bar gas at that temperature for long (is in, more than 1 s).

The Galileo probe carried no dedicated acoustic suite (alas).

Astonishment perhaps that they existed?

Wait till they find out about the VeGa and Venera programs!

<holds hand to brow>

&gt;Does anyone have information about Russian space SHUTTLES?
Yes, a great many people know about Buran.

It wasn't a secret, unlike some of the soviet union's more exuberant missions (Polyot, for eg: or the Luna Korabyl's test flights: Kosmos 3 hundred and something)

I've two tiles from a Buran engineering spare, and had the pleasure of taking a ride in its simulator at Zhukovsky once.

Find your local university's astro soc - if they've any gumption they'll have a star party and far bigger tools than you could want.

Most are pleased as punch to have normal folk just turn up to take a gander.

You misunderstand me (or I wasn't clear).

Cryogenics is the engineering of low temperatures. I've worked in departments that specialized in cryogenics (we tested foam thermal conductivity at low temperatures for clients).

Here

Cryonics, a different word, is the study of how to cool biota, the cellular preservation mechanisms, and so on.

And drive it with several world's supplies of fission devices - the Rocket Equation takes no prisoners.

:\

<pedant mode: on>
Cryogenics is known - it's been studied since we liquefied air in the last millenium.

Cryonics is a field (but not entirely full) of woo and hope.

Voyager 1 was the business end of a terribly large mass-fraction consisting mostly of a Titan Centaur combo.

Thus, it was able to leave cis-lunar space with a stupidly high C3, allowing the Grand Tour.

A generation ship will be orders of orders of magnitude more massive. And probably has to be built at L4/L5 (or similar).

Cryonics.
Cryogenics is an extant art/science.

Yes.

This is a common problem with ring roads on O'Neill colony habitats.
Drive along the Equatorial Route #1 prograde, and your suspension creaks.
Drive along it retrograde and you might lose traction.

Banks deals with this in Consider Phlebas.

You're standing in a sparse crowd of people - you can see many people, and know their positions and speeds with respect to you quite well.

Now, those folk are stars and gas clouds - does that make it seem less mysterious that you can map their position from another vantage point?

Meh. mc^2 for ten to the minus 26 kg is ten to the minus 10 joules. You'd barely notice the flash with dark adapted eyes.

And we can estimate the mass needed and timescale for thought to occur.

It depends on what type of moon it is.

Phobos-esque? A little scrap of rock that offers little more than the IAU to argue over names of features on it.

Vesta-like? More hydrated minerals! Woohoo!

As moon's go, Luna's rather nice. Small enough to not have a ludicrous escape speed and large enough to have had some interesting times with volatile-delivering comets.

A major part of that prediction, IMO, is that we will be our own downfall.

The world is warming and more energy in the troposphere leads to more extreme weather patterns. Wars will escalate over water, population fluxes, and food. And it takes just one of them to involve a nuclear-tipped country (or their proxy) and we're on a fast-track to 'Cocked Pistol'.

Game over, except for the black smokers in the benthic depths.

Long term, with Homo Sap. v1.0, a planet is a Very Bad Idea.

The timescales for change on such a large biosphere are vastly slower than our attention spans. By the time we've got around to the idea of limiting CO2/population, we're at 40 Ttonnes in the oceans of the former, and 8 billion of the latter.

We're really really bad at living in (seemingly) infinite playpens, as we always think that there's another forest to cut down. Until there isn't.

No, planets are for the birds. To prosper we'll need to learn how to deal with finite (but large) resources. There are treasures for the taking in the inner solar system - but just going all Homo Sap. 1.0 Out There leads to the same problem. Understanding how to prosper in a cautious manner will help - understanding that more isn't always better, and working with what we *can* have, rather than what we want, might be the only answer.

<booooop>

I knew of radar probing of the Sun, and the amazing Arecibo *imaging* of Mercury's polar regions, but this is new to me. Thanks!

Near-unlimited resources and power. Just scant hundred km away, and no more than 10km/s away once you're in LEO.

<Cosmos (1st series), Clarke, and O'Neill raised me - and thankfully I got to work on Rosetta, Cassini/Huygens, and Beagle2>