Science News

Collaboration cracked the case on deep focus quakes

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When it comes to earthquakes, seismologists know best. But deep-focus earthquakes—those that occur between 300 and 700 km below the surface—have been a mystery to science for a century. Over the years, many scientists have suggested different answers to this problem. Still, the deep Earth is impossible to study directly, so the earthquakes kept their secrets until a group of scientists at the Earth and Planets Laboratory teamed up to crack the case. 

 
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May 2021 | Letter from the Directors

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Unlike the cicadas who go pretty much unnoticed during their time underground, EPL staff have been quite visible over the last year as they turn datasets acquired pre-pandemic into publications. As is typical of the work pursued by EPL scientists, the discoveries range from the deep Earth to distant stars.

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What causes the deep Earth’s most mysterious earthquakes?

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The cause of Earth’s deepest earthquakes has been a mystery to science for more than a century, but a team of Carnegie scientists may have cracked the case.

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Earth and Planets Laboratory’s Top Questions in Petrology, Mineralogy, and Mineral Physics

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In this article, our petrologists, mineralogists, and mineral physicists have highlighted six questions that we’re working on so that we can better tell the story of our planet. 

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Record-breaking flare from Sun’s nearest neighbor

Artist's conception of a violent stellar flare erupting on neighboring star, Proxima Centauri. The flare is the most powerful ever recorded from the star, and is giving scientists insight intonthe hunt for life in M dwarf star systems, many of which have

A team of astronomers including Carnegie’s Alycia Weinberger and former-Carnegie postdoc Meredith MacGregor, now an assistant professor at the University of Colorado Boulder, spotted an extreme outburst, or flare, from the Sun’s nearest neighbor—the star Proxima Centauri.

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The glove box that held the Moon

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Postdoctoral fellow Nico Kueter writes about the surprising history of a rusty old glove box that housed the very first lunar samples. 

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