NASA Astronauts Finally Return, Seals Hold Their Breath, and Penguin Poop Stresses Out Krill

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  Hi, I'm Clara Moskowitz, senior editor for Space and Physics at Scientific American.

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  Like many kids, I once dreamed of becoming an astronaut.

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  While I never made it to space,

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  my work at Scientific American has given me the next best exploring the cosmos through stories and sharing its wonders with science lovers like you.

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  When I research a story,

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  I immerse myself in the reporting to bring you an exciting and accurate account.

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  Over the years, I've covered breathtaking rocket launches,

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  visited one of the world's highest altitude telescopes in Chile,

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  and even trained for suborbital spaceflight.

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  I love interviewing scientists who are exploring the mysteries of space.

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  If you'd like to learn about the secrets of dark matter directly from an expert,

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  join me on April 9th for a live conversation with theoretical physicist Katherine Zurich.

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  Subscribe to Scientific American today@siam.com getciam to attend this event and explore our vast,

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  beautiful cosmos.

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  Happy Monday, listeners, for Scientific American Science Quickly, I'm Rachel Feltman.

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  Let's kick off the week by catching up on some science news you may have missed.

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  We'll start out with a space update

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  that we've been waiting about nine months for and Splashdown Crew 9 back on Earth Butch Volmore and Suni Williams are finally back on Earth.

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  The two NASA astronauts,

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  who were meant to spend about a week on the International Space Station but have been there

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