But the iiiiiiiiice man...

The iiiiiiiiiiiiiiice is cold.

Tell that to frozen lakes.

Cold from our point of view. But go to the poles, where the water is zero degrees Celsius or less, and you'll find it is teeming with life. Go to a black smoker on the sea bed, where the water can reach 300 degrees Celsius, and you'll find life there as well, thriving without even any energy from the sun.

Liquid water is inhabitable.

How can the water be 300 degress? I don't mean that like as in sarcasm, generally how, it's so weird!

Magic, in some form, can do anything.

The pressure at the sea bed, which is considerable, keeps it liquid. Pure water only boils at 100 degrees Celsius in the average atmospheric pressure present at sea level. As you climb in altitude the pressure drops and the water is able to boil at lower temperatures. That is why you can't make a good cup of tea up a mountain: the water boils at too cool a temperature so cannot become hot enough to open up the tea leaf cells. Similarly, pressure cookers allow you to boil food at a higher than 100 degrees Celsius by maintaining a high pressure within the cooker.

hm i was reading something about ice 7 ice made by pressure,they say it can be hot as fire and it will still be icy,quite wierd

Ice Ih is the kind you get on Earth under normal conditions, with a hexagonal crystal lattice that forms snowflakes and is less dense than liquid water in the conditions available on Earth. Under specific laboratory conditions and quite probably on other worlds other crystalline phases of water are produced (Ganymede is thought to be mostly made of Ice II). Ice Ic is occasionally known in the upper atmosphere and Ices II-XV have been produced under a range of pressures and temperatures. The water molecules arrange themselves into different structures with different properties.

There's also amorphous ice which lacks any crystalline structure at all.

This is the phase diagram, pressure in Pascals on the y axis, temperature in Kelvin on the x axis.

there are a few good documentaries like journey to the edge of the universe,i watched it 3 times,and lost planets( i dont quite remember the name of this documentary)it says that on some planets it can rain molten iron,or you can find planets with diamonds the size of a small tower,or even bigger.it also said that there are planets and stars running a drift trough the universe till they find a home,mostly this happens when a bigger star enters the system and slingshots a other star out of the system.some scientists say that these planemos can have life if they had lots of CO2.

edit: i think its this
http://channel.nationalgeographic.co...ideos/07059_00

I wouldn't count on an orphaned planet being life-bearing. While it's possible, the chances are probably the chances of finding an Earth-like planet, squared, and applied those odds only to orphaned planets. Which are hard enough to find as it is. It'd be like finding a needle in a hundred billion exploded haystacks, in which there is a light year between each piece of hay and the needle is made of straw. In the dark.

Some stars are fucking HUGE. Lookie

http://upload.wikimedia.org/wikipedi...Star-sizes.jpg

last thing i heard was this betelgeuse,now when i see VY Canis Majoris its like,i can imagine how would earth look like,like a tiny invisible piece of dust.i can only imagine what kind of things you can find in space,like an earth like planet that makes earth look like a golf ball(100× the size of earth or even more)or planets made out of iron,or diamonds,or crystals...its truly limitless,but you just need to search

A planet made of diamond would need to be staggeringly huge and very close to a star.

yeah,i heard there are grafit planets,that have lots of grafit blocks,diamonds,and anything grafit related,and coal

i found the scale between the sun and that huge star you posted,it looks like a spec
http://daddyblog.files.wordpress.com...ajorissvg1.png

Maybe the word you are looking for is carbon?

A planet that size would not, by definition, be Earth-like. I'm not sure that a rocky planet that size would even be stable, or that you can cram enough matter into an accretion disk to create a single planet with that much of it. Even if you did, it could not be Earth-like.

Yeah, a perfectly formed ball of carbon is unlikely to have much of anything conductive to an atmosphere.

well who knows they found one super earth type planet,only its 10× bigger than earth.i found that a planet in our solar system named sedna takes 12.000 years to make a full orbit around the sun http://en.wikipedia.org/wiki/90377_Sedna
http://upload.wikimedia.org/wikipedi...05569-crop.jpg red is sedna's orbit
she will be closest to the sun at 2076

I don't think it would need to be close to the star, the planet itself could provide all the pressure and heat required, as it actually does. But more likely such a planet would be the core of an ancient dead star.

Being made exclusively of carbon could it provide enough heat during formation to make the surface diamond as well?

Pressure is also required. No geological metamorphosis requiring pressure can occur on the surface, and I don't think atmospheric pressure can do the trick. Unless something blasted off the outer layers, but I don't know what could do that satisfactorily.

I suppose it's theoretically possible for our diamond planet to be hit by a tonne of meteorites over millions of years in such a way that the surface layer was blasted off. Our theoretical planet is made of diamond after all, it's going to stand up pretty well against mere flaming balls of iron.

Being hit by meteorites usually increases the mass of a planet by having more stuff put on it.

Mined for tens of thousands of years by some mercantile aliens who reckon diamond mining is just far too much effort?

I wonder how pretty and insanely bright it would be when a sunset reflects off it.

Insanely. Providing, of course, that someone had seen fit to have it cut.

Cleansly mercentile aliens.

That's your answer to everything.

Maybe your hypothetical diamond planet had it's outer layers ripped of by a dying star?

I shouldn't expect that would be even nor that even the diamond core would survive. I think it much more likely that this planet would actually be a dead star.


Of course, I am fully prepared to be proved totally and utterly wrong by genuine discovery, as a good deal of astronomical assumptions and expectations have been (usually by probes).

in our theoretical diamond planet is it possable that the same pressure that made the diamonds slowly pushed them up to the surface, the outer layer could be diamonds and the inner layer would be coal with some diamonds pushing up