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The Earth had to cool down enough for water to appear.
It is no longer enough for water to simply be water: it must have special powers.
The material could help with water purification and desalination efforts; thin graphene sheets with holes just large enough for water molecules could sequester pollutants, while thin tubes lined with it could draw up water and leave salt behind.
The so-called habitable zone of Alpha Centauri B, where temperatures would be moderate enough for water and creatures like us, is about 65 million miles from the star, where a year would take 200 days or so, about the same as the orbit of Venus in our own system.
Three of these lie in their solar systems' habitable zones (that is, they are at a distance from their parent stars which makes them warm enough for water on their surfaces to be liquid, but cool enough for it not to be steam).
Polymer molecules are long, snakelike affairs, and if you pick the right ones, they will tangle together in a way that leaves gaps big enough for water molecules to pass, but not big enough for the sodium and chloride ions of which salt is composed.
Similar(45)
Some researchers think that this process could have heated Mars enough for liquid water to have formed on the surface.
Maybe many of us don't pay enough for the water that we consume, that's what I think.
A touch larger than Earth, in an orbit that keeps it warm enough for liquid water, but not too warm, the planet looked ripe for life.
Fortunately neither hole is deep enough for the water to go over our boots, but through the day the holes are like hidden traps.
The new planet, 45 times the mass of Earth, is thought to lie in a habitable zone that is warm enough for liquid water.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com