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Strange Alien World Made of "Hot Ice"

David Shiga writes "The smallest planet ever seen passing in front of its parent star is a strange world of scorching hot ice, astronomers say. The 22-Earth-mass planet has been known since 2004, but recent observations of it passing in front of its parent star have allowed them to learn much more about it. It appears to be made mostly of water, but not in liquid form. The planet orbits so close to its parent star that its surface is a broiling 300 C, keeping any water there in vapor form. Beneath the atmosphere, the water is even hotter, but is at such high pressure because of the planet's large mass that it stays in a solid, "hot ice" form."

2 of 216 comments (clear)

  1. Interesting. by jshriverWVU · · Score: 4, Interesting

    Kinda OT, but wonder if hot ice can be made on earth in a controlled environment.

    1. Re:Interesting. by UbuntuDupe · · Score: 4, Interesting

      Since it's just a matter of increasing the pressure, yes, but don't think you can just reach inside the pressurized chamber and touch it.

      Side note: this is vindication for all the times people riduculed me for responding to claims about water's boiling/melting point with "Wait -- what pressure are we talking about here?"