iron

‘It looks like Iron Curtain 2.’ Arctic research with Russia curtailed after Ukraine invasion | Science

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This year, polar bears will cross from Alaska to Siberia as they do every spring, plodding across the frozen Chukchi Sea to their summer home on Russia’s Wrangel Island. But this time, U.S. scientists won’t be following them. “There’s no way,” says Eric Regehr, a University of Washington (UW), Seattle, polar bear biologist who was … Read more

Too much of a good thing: Early impacts delivered iron to Earth but almost wiped out life

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Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of Ask a Spaceman and Space Radio, and author of How to Die in Space. The Hadean era was a pretty wild ride. Earth had just formed, but meteorites constantly rained from the sky, pummeling our young planet for over 700 million years. Those impacts posed a … Read more

Archaeologists Uncover Exciting ‘Time Capsule’ of Iron Age Artifacts in England

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For over 25 years, a group in Poulton, England has been looking for a lost Cistercian abbey. Instead, over the decades the team has found hundreds of medieval skeletons and well-traveled Roman artifacts. Now, they have discovered what they’re calling “the best preserved picture of late prehistoric life ever found in [North West England]”.   … Read more

The Mysterious Origins of King Tutankhamen’s Space Rock Dagger Just Got Clearer

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You may already know the legend of King Tutankhamen’s space dagger – an iron weapon forged from the rock of meteorites, and entombed with the ancient Egyptian pharaoh. Now a new study has revealed more details about this most fascinating and mysterious of artifacts.   A thorough chemical analysis involving high-resolution photography and X-rays has … Read more

The Iron of Earth’s Inner Core Could Be in a Strange ‘Superionic’ State, Study Finds

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Deep below the crust of Earth, past the thick mantle and liquid outer core, lies a 1,220-kilometer (760 mile) ball of solid inner core. But a new study has suggested that the inner core is not solid at all, instead forming a ‘superionic state’ with hydrogen, oxygen, and carbon, making it unlike either a liquid … Read more

Super-Earths: Long-lasting radiation shields may make for life-friendly worlds

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Life on Earth is made possible by our planet’s magnetosphere – an invisible radiation shield that protects the surface – now it turns out that super-Earths could have magnetospheres too Space 13 January 2022 By Alex Wilkins The laser system at the National Ignition Facility in California used to study iron’s properties Damien Jemison The … Read more

Heating Up Testicles With Nanoparticles Can Work as Male Contraception. Here’s How

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Women have a variety of methods for contraception, but only two methods are commonly available to men: condoms and vasectomies. Both methods have their drawbacks. Condoms can break, and some men are allergic to the latex in standard condoms. Vasectomies are surgical procedures that can be painful and difficult to reverse.   So the search … Read more

Exoplanets: Extremely dense world with an enormous iron core has an 8-hour year

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By Leah Crane The exoplanet GJ 367b orbits its star in an extremely short time SPP 1992 (Patricia Klein) An extraordinarily dense exoplanet seemingly made mostly of iron has joined a group called the ultrashort-period planets that orbit so close to their stars that their years are less than one Earth day long. Kristine Lam, … Read more

How changing levels of iron shaped the evolution of life on Earth — and why alien hunters should take note

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This article was originally published at The Conversation. The publication contributed the article to Space.com’s Expert Voices: Op-Ed & Insights. Hal Drakesmith, Professor of Iron Biology, University of Oxford Jon Wade, Associate Professor of Planetary Materials, University of Oxford Our red blood is full of iron. We need iron for growth and for immunity. It is even added … Read more