New findings suggest that unlike in Earth, the bottom of Mars’s mantle is a sea of molten silicate rock.

Javier Barbuzano
Javier Barbuzano is a freelance science journalist based in Barcelona, Spain. He received his master’s in science journalism from Boston University in 2017 and holds a degree in environmental science from the University of Granada in Spain. His work appears in publications like Eos, Sky & Telescope, and El País.
Arrokoth’s Mounds Hint at How Planetesimals Form
The most remote world ever seen up close is a mash-up of smaller pieces.
Astronomers May Have Spotted the Birth of a Planet
Lumps of dust are spiraling around a young star 5,000 light-years away. They could be Jupiter-like planets in the making.
Subsurface Oceans Could Boost Exoplanet Habitability
Researchers have shown that oceans buried below layers of ice are more common than previously thought.
Air Pollution Increases COVID-19 Risks
A crop of new studies shows that exposure to air pollution adds days to hospital stays and increases the likelihood of death from COVID-19.
Nearby Volcano Planet Likely Fueled by Tidal Heating
A gravitational dance between a newly discovered exoplanet and its host star may be driving extreme volcanism on its surface.
Tiny Martian Moon May Be a Chip Off the Old Block
A close approach to Deimos reveals that its surface does not look like that of an asteroid, hinting at a Martian origin.
Active Volcanoes on Venus?
With a new look at old imagery, scientists may have found evidence of volcanic activity on Venus.
Seafloor Reveals a Period of Rapid Retreat for Thwaites Glacier
New high-resolution seafloor imagery shows a series of delicate ridges produced by the glacier’s front as it bobbed daily with the tides, revealing a recent period of rapid retreat.New high-resolution seafloor imagery shows a series of delicate ridges produced by the glacier’s front as it bobbed daily with the tides, revealing a recent period of rapid retreat.
Seashells and Penguin Bones Reveal Thwaites Glacier’s Quiet Past
Antarctica’s Thwaites and Pine Island Glaciers are melting faster than they have in the past 5,500 years, new evidence shows. Against expectations, their pasts have been remarkably stable.