Scientists suggest that the hydrogen could be evidence of hydrothermal activity on the ocean floor of Saturn's sixth largest moon.
JoAnna Wendel
JoAnna Wendel is a freelance science writer and cartoonist. She covers topics ranging from the geology of faraway moons to the behavior of animals in our oceans. She served as a staff writer for Eos from 2014 to 2018, then worked in communications in NASA’s Planetary Sciences Division. JoAnna is now freelancing full time as a writer and artist.
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Iapetus's Ridge: The Result of Many Small Impacts?
A ridge around Saturn's third-largest moon has scientists scratching their heads.
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Lunar Lava Tubes Could Offer Future Moon Explorers a Safe Haven
Scientists find evidence that a 50-meter-deep pit on the Moon's surface could be a skylight opening to an intact lava tube tens of kilometers long.
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Earth Science Budget Woes Cast a Shadow on Planetary Scientists
NASA's record-high proposed planetary science budget didn't quell the fears scientists have about cuts to Earth sciences.
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New Images of Pan, Saturn's Walnut Moon, in Unprecedented Detail
The finely detailed images can help future scientists study small bodies with weak gravity.
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GOES-16 Satellite Lights Up Lightning Flashes in New Video
The satellite's lightning mapper instrument will help scientists forecast extreme weather.
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Activists Set Out to Save Data, One Byte at a Time
Leaders of the DataRefuge movement hope that volunteer efforts across the country can stop government data from disappearing.
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Seven Earth-Sized Planets Seen Whizzing Around One Cool Star
Although all the exoplanets orbit closer than Mercury does to our Sun, liquid water may persist on some of them because their star radiates so little heat.
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Scientists Spot Organic Molecules on Ceres
The presence of organic material on Ceres raises new questions about its internal evolution and potential for hosting past or present life.
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New Report Details How NASA Could Land on Europa
A team of scientists laid out extensive details about a hypothetical future landing mission to find life on Jupiter's moon.