Joe Palca Joe Palca is a science correspondent for NPR.
Joe Palca, photographed for NPR, 17 January 2019, in Washington DC.
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Joe Palca

Large Synoptic Survey Telescope under construction on Cerro Pachón in Chile Joe Palca/NPR hide caption

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Joe Palca/NPR

New Telescope Promises To Revolutionize Astronomy

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CLASS Telescope Kathy Hudson/Hudson Works hide caption

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Kathy Hudson/Hudson Works

Telescope In Chile's Mountains Looks For Signals To Explain How The Universe Began

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This illustration shows NASA's Cassini above Saturn's northern hemisphere before making one of its "Grand Finale" dives. NASA/JPL-Caltech hide caption

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NASA/JPL-Caltech

Robots, Not Humans, Are The New Space Explorers

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Sun over Pacific Ocean during total eclipse as viewed from the Cerro Tololo Inter-American Observatory. Kahty Hudson/Hudson Works hide caption

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Kahty Hudson/Hudson Works

Total Eclipse Hits Chile, Home To Half Of World's Telescopes

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Sun over the Pacific Ocean during total eclipse viewed from the Cerro Tololo Inter-American Observatory Kathy Hudson/Hudson Works hide caption

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Kathy Hudson/Hudson Works

Path Of A Total Solar Eclipse Passes Over A Major Observatory In Chile

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Dawn on eclipse day at the Cerro Tololo Inter-American Observatory. Joe Palca/NPR hide caption

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Joe Palca/NPR

Solar Eclipse Will Pass Over A Major Observatory In Chile

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Scientists Study Human Cancer Genes In Plants

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This graphic shows the path of Tuesday's solar eclipse and how much you can see from different places. The yellow band represents the path of totality, or the areas in which a total eclipse will be visible. Other areas will be able to see a partial solar eclipse. Michael Zeiler, greatamericaneclipse.com hide caption

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Michael Zeiler, greatamericaneclipse.com

Support structure for the thermal probe called "the mole." NASA/JPL-Caltech hide caption

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NASA/JPL-Caltech

NASA Engineers Try To Remedy Stuck Probe On Mars

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Some cottonwood trees are home to microorganisms that are known methane producers. Sean Bagshaw/Science Source/Getty Images hide caption

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Sean Bagshaw/Science Source/Getty Images

Getting Fire From A Tree Without Burning The Wood

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An imbalance between matter and antimatter in the universe produced all the things in existence, including corned beef sandwiches. Erik Rank/Getty Images hide caption

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Erik Rank/Getty Images

Why Corned Beef Sandwiches — And The Rest Of The Universe — Exist

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Boarding Pass for Mars nasa.gov hide caption

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nasa.gov

NASA Wants To Send Your Name To Mars In 2020

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Dr. Kaiyu Hang/Yale University

If Drones Had 'Claws,' They Might Be Able To Fly For Longer

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InSight seismometer with protectiive wind cover deployed on Mars. NASA/JPL-Caltech hide caption

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NASA/JPL-Caltech

NASA's InSight Probe May Have Recorded First Sounds Of Marsquake

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George Berzsenyi mentored thousands of high school students in mathematics. Sara Stathas for NPR hide caption

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Sara Stathas for NPR

A Math Teacher's Life Summed Up By The Gifted Students He Mentored

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