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core

SPACE: What Does the Inside of Mars Look Like?

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Mars Core

Like a bruised peach sliced apart to reveal an enormous yellow pit, Mars shares its inner mysteries in the first-ever map of an alien planet’s interior — released as part of three new studies published July 22 in the journal Science. This premiere look at the Martian interior is the culmination of two years of research (and decades of planning) with NASA’s InSight lander — a stationary science robot deployed to Mars in 2018 with the sole mission of studying the Red Planet’s unseen innards. About a month after landing on the flat, smooth plain known as Elysium Planitia, InSight … Read more

STUDY: Saturn’s Core Mighty Be Soupy (But Is It More Minestrone or Clam Chowder?)

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pea soup - pixabay

Saturn’s rings aren’t just a beautiful adornment — scientists can use the feature to understand what’s happening deep inside the planet. By using the famous rings like a seismograph, scientists studied processes in the planet’s interior and determined that its core must be “fuzzy.” Instead of a solid sphere like Earth’s, the core of Saturn appears to consist of a ‘soup’ of rocks, ice and metallic fluids that slosh around and affect the planet’s gravity. The new study used data from NASA’s Cassini mission, which orbited Saturn and its moons for 13 years between 2004 and 2017. In 2013, data … Read more

Earth’s 200 Million Year Growth Spurt

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Earth's Core - Deposit Photos

Around 3 billion years ago, Earth’s crust ballooned during a massive growth spurt, geoscientists have found. At that time, just 1.5 billion years after Earth formed, the mantle — the layer of silicate rock between the crust and the outer core that was more active in the past — heated up, causing magma from that layer to ooze into fragments of older crust above it. Those fragments acted as “seeds” for the growth of modern-day continents. The researchers found evidence for this growth spurt hiding in ancient zircon crystals in stream sediments in Greenland. These extremely durable crystals — made … Read more

SCIENCE: The Paradox of Earth’s Inner Core

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Earth's core - NASA

Earth’s Inner Core Shouldn’t Technically Exist Earth’s solid inner core formed about one billion years ago. Researchers are getting closer to figuring out how it happened. One day, about a billion years ago, Earth’s inner core had a growth spurt. The molten ball of liquid metal at the center of our planet rapidly crystallized due to lowering temperatures, growing steadily outward until it reached the roughly 760-mile (1,220 kilometers) diameter to which it’s thought to extend today. That’s the conventional story of the inner core’s creation, anyway. But according to a new paper published online this week in the journal … Read more