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Giant string of organic molecules on Mars may be one of the best signs of life yetA new NASA analysis concludes that it is "reasonable to hypothesize" that living things could have formed the odd organic molecules discovered on Mars.
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Giant 'spiderwebs' on Mars contain tiny egg-like structures that scientists 'can't quite explain,' NASA rover revealsNew photos captured by NASA's Curiosity rover show that Mars' giant, spiderweb-like "boxwork" features are covered in tiny, never-before-seen nodules that bear a striking resemblance to arachnid eggs. And researchers are struggling to explain them.
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Rare 'planetary parade' will return to the evening sky this weekSix planets will shine together in the evening sky on Feb. 28. Here's how to get the best view before they disappear.
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Saturn's largest moon may actually be 2 moons in 1 — and helped birth the planet's iconic ringsA new study hints that Saturn's largest moon, Titan, was created around 400 million years ago, when two massive moons smashed into each other. This hypothesis could also help to solve several other mysteries surrounding other moons and the planet's iconic rings.
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How long do most planets last?Planets are born, and they can also "die." So what's the lifespan of a typical planet?
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Strange rocky world found lurking on the edge of 'inside out' planetary systemAstronomers have spotted an unusual 'inside-out' planetary system where a rocky world seems to have formed far beyond the realm typically reserved for gas giants.
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Something supercharged Uranus with radiation during Voyager flyby 40 years ago. Scientists now know what.Forty years ago, Voyager 2 flew past Uranus and observed radiation levels that defied explanation. Now, scientists may finally know exactly what happened.
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Martian meteorite that fell to Earth is full of ancient water, new scans revealA new study has revealed that the iconic Black Beauty meteorite contains much more hidden water than previously suspected. The rock, which fell to Earth from Mars, could reveal clues about the Red Planet's watery past.
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Life-friendly molecules are leaking out of Jupiter's giant moon EuropaA new finding of ammonia on the icy surface of Jupiter's moon Europa could have important implications for the search for extraterrestrial life.
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