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Ep. 478: Apollo 8 with Paul Hildebrandt

On Christmas Day, 1968 Frank Borman, James Lovell and William Anders became the first human being to see the far side of the Moon. Their mission, of course, was Apollo 8, the first time human beings had ever left Earth orbit and seen the far side of the Moon. Today we talk all about Apollo […]

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Ep. 477: State of Exploration: Once and Future Moon

It’s been decades since humans set foot on the Moon. Well, it’s time to go back, in theory. Of course, we’ve heard this all before. What are the plans afoot to send humans back to the Moon this time. What hardware will we use, and what other strategies are in the works to make this […]

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Ep. 473: Remembering the Best Space Science of 2017

2017 was a crazy year for, well, you know. But, it was a great year for space science, a kilonova, extrasolar planets, reusable rockets and more. Let’s look back at the year that was and remember our favorite space science. We usually record Astronomy Cast every Friday at 3:00 pm EST / 12:00 pm PST […]

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Ep. 466: Origins of Zero (0)

We depend on zero for our math to work right, but this number was actually invented in fairly recent times. Why do we need zero? Was it inevitable? Note: Due to how Pamela had to record, the audio on the Full Raw Feed is not up to our usual quality this episode. Chad did wonders […]

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Ep. 458: The Science of Cassini

And now Cassini’s gone. Smashed up in the atmosphere of Saturn. But planetary scientists are going to be picking through all those pictures and data for decades. Let’s look back at some of the science gathered up by Cassini so far, and we can still learn from this epic journey. We usually record Astronomy Cast […]

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Ep. 447: Animals in Space Pt. 3: Dogs, Monkeys and More

For the final episode in our 3-part episode about animals in space, we look at the largest animals to go to orbit. And I’ll just warn you now, this is going to be a really sad episode. We usually record Astronomy Cast every Friday at 1:30 pm PDT / 4:30 pm EDT/ 20:30 PM UTC […]

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Ep. 446: Animals in Space Pt. 2: Mice and Other Small Animals

Last week we talked about how the smallest creatures behave in space, but now we move up in size a little to small animals, like mice. What missions have they flown on, and how does microgravity affect their biology? We usually record Astronomy Cast every Friday at 1:30 pm PDT / 4:30 pm EDT/ 20:30 […]

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Ep. 445: Animals in Space Pt. 1: Insects and Arachnids

We’ve talked about animals traveling to space in the past, but it’s time to take another look, with many other creatures making the trip to the void. Today we’re going to talk about the spineless insects and arthropods, and those tough-as-nails waterbears – tardigrades. We usually record Astronomy Cast every Friday at 1:30 pm PDT […]

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Ep. 432: Geoglogic Ages of Mars – From Wet and Wild to Desolate Desert

Today, Mars is a desolate wasteland, with dusty red rocks and sand stretching out to the horizon. But billions of years ago, it was a vastly different world. It was blue, with oceans, rivers, lakes, and maybe life? Let’s tell the story of geology on Mars, and we got from that world to the one […]

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Ep. 419: DragonCon 2016 Live – Rocket Girls

Welcome back to our new season of Astronomy Cast! This episode is a special live show that took place at DragonCon 2016 in Atlanta, GA. Pamela hosted a panel of amazing scientists and engineers who all happen to be women, and they discussed the unsung women of NASA and the early Space Age and their […]

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