Can a star be made from water?

a drop is enough.

Interesting question, working on it now, I have a feeling its not possible as water. You would have to have large enough mass such that the 'water' would dissociate first into Hydrogen.

A drop is enough for fusion to take place, but not under its own gravity, as I believe OP implied.

Anything is possible, you know... and wouldn't that just be something? :)

The density of liquid water is not great enough for gravitational confinement to imitate fusion. It would have to happen in stages, IE pushing the Oxygen out first, and then the H2 would have to further split in to free protons. Its not possible with water as we know it, but it could certainly happen via an unknown/unobserved process. I tend to think of water as the 'ashes' of stars or super nova. Water all by its self appears to be in a particularly low energy configuration.

I think the water drops down into the water table until the volcao spews it into the atmosphere - the star is the snowflake.

Star light makes water. You might have it backwards.

Interesting responses; I thought that the gravity of enough water in one place could bring about fusion of the hydrogen. From the answers, it seems to be not possible.

If you had ENOUGH of it, it would dissociate and then it wouldn't really be water anymore. It COULD happen but it would have to happen in stages.

Food for thought, some researchers have shown (mathematically anyway) that matter making up super-massive black holes may have a density close to that of /air/.

3-5 Jupiter masses. However this would be a short (very short) blast as the energy release of fusion would blow off enough mass to stop the fusion process.

Theoretically, minimum mass of a star (able to maintain fusion) is estimated to be about 75 times the mass of Jupiter.

Assuming of course they are composed largely of hydrogen.

Helium would require more mass to ignite and maintain fusion.

Long before you reached enough mass to undergo and maintain fusion (as a star does) the hydrogen and oxygen of the water molecules would have disassociated (split apart) and layered within the body of the total mass with oxygen (near metallic state) sinking to the core and hydrogen rising to the top.

Obtain star shape mold,add water freeze. Star from water..

Thanks Dr House, that's what I wanted to know. Appreciate your help. Metallic Oxygen at the core with metallic hydrogen on top; fusion taking place at the boundary.

Sicky...OMG you changed your Avatar!...anyway I was going to agree with you!

I cancelled my registration for awhile and came back to check in...Blazen

Here is further food for thought... mathematicians dislike being faced with problems that turn out to be 'impossible' to solve, when faced with our present system of numbers. In fact, they dislike it so much that they were inspired to create a new numbering system, in which formerly 'impossible' equations can be solved.

How do you like that...? So, if we were to draw any sort of practical inferences from this knowledge, it would be, what, do you suppose...?

Your chemical/physic version of your question is a question within the question. If you want to understand the mechanical nature of water made into a star...then continue, however to make a star there are many other outer realm possibilities to consider.