Discovery of volcanic ice flows and melting of ice on the surface of Europa that support the premise of liquid oceans underneath.
In addition to containing the vast majority of the liquid freshwater on the surface of our planet, humans use lakes for more purposes than any other type of water system.
But, she says, it is still unclear if liquid on the surface of Titan is in the form of puddles, lakes or oceans although the arrival of a spacecraft called Cassini in 2004 might solve the mystery when it drops a probe into Titan's atmosphere.
Satellites at Mars have long captured images of channels on the planet's surface that were cut by some kind of flow, assumed to be liquid water.
Now striking pictures suggesting the presence of liquid water on the Martian surface have scientists believing we are getting closer to finding out.
In cystic fibrosis, this mechanism is far less effective, because the level of salt concentration in the airway surface liquid is far too high.
This is going to be slightly confusing for everyone out there now that Microsoft has announced the Surface, the case of which is made of liquid metal.
FORBES: Microsoft Surface's Liquid Metal Is Not The Same As Apple's LiquidMetal
In order to have liquid water at the surface, the atmosphere of Mars had to be considerably thicker than it is today.
Coal ash is disposed of either as a liquid that goes into large surface impoundments or as a solid that is placed into landfills.
How often the Universe has planets truly like the earth - true earth twins, planets the size of the earth, rocky planets with a surface that supports liquid water - well, we don't have that number yet, but I'm optimistic we'll figure it out.
The habitable zone is the region of a planetary system which is neither too hot nor too cold - such that water on the surface of a planet will neither evaporate nor freeze, but instead can stay liquid.
BBC: NEWS | Science/Nature | Earth-like planets may be common
When these charged droplets come into contact with the surface of the print they collect any substances deposited on it, creating a thin liquid film.
For a liquid piston to work, its surface must be stable in the face of rapidly changing pressures.
The finding upends previous studies, which had estimated that the Red Planet's internal water stores were scanty at best something of a surprise, given that liquid water apparently flowed on the Martian surface long ago.
MSN: Scientists say parts of Mars interior are as wet as Earth's
When a team of Harvard researchers wanted to create the ultimate liquid- and solid-repelling surface, they looked toward the Nepenthes pitcher plant, where curious insects check in and never check out, thanks to slippery walls that lead to their tiny, horrific fate.
The reason why that's exciting, is one of the properties we'd like to have on a habitable planet is liquid water on the surface.
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