A roughly 3.5-mile high Martian mound that some scientists suspect preserves evidence of a massive lake might actually have formed as a result of the Red Planet's famously dusty atmosphere.
The European Space Agency's (ESA) Herschel space observatory has solved a long-standing mystery as to the origin of water in the upper atmosphere of Jupiter, finding conclusive evidence that it was delivered by the dramatic impact of comet Shoemaker-Levy 9 in July 1994.
There are many challenges to achieving the dreamed-about hydrogen economy, but one of them – the ability to make hydrogen from water cheaply and at scale – could be a little closer to being overcome. If it indeed is, renewable energy could become a whole lot more economical.
NASA has created a 3D reconstruction of ancient water channels below the surface of Mars, revealing evidence of a catastrophic flood in the last 500 million years.
Tying a smoke ring in a knot sounds impossible - but University of Chicago physicists have done something similar by creating a vortex knot for the first time, in a container of fluid.
Researchers have developed a special treatment for cotton fabric that allows it to absorb large amounts of water from misty air and release it by itself as it warms.
A meteorite found in the Moroccan desert in 2011 appears to have originated in Mars' crust - and contains much more water than any Martian meteorite ever found before.
Clay minerals - rocks that usually form when water is present for long periods of time - cover much more of Mars than previously thought, say Georgia Institute of Technology scientists.
A study of water from the Martian interior shows that Mars was originally formed from similar building blocks to Earth, but evolved differently later on.
University of Arkansas researchers have come up with an explanation of how water on Mars could produce the flow patterns observed by NASA's Mars Reconnaissance Orbiter.
The water found locked inside soil on the moon's surface derives from hydrogen in the solar wind - meaning there could be water on other apparently-dry bodies in the solar system too.
Carnegie Mellon University spinoff Astrobotic Technology has now completed a full-size prototype of a solar-powered robot designed to search for water ice at the moon's poles.
