Archive | Our Solar System

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. 431: The Search for Life on Mars

We’re fitting in one more episode this week, before Fraser heads off to Costa Rica for a week. Our next episode will record on Dec. 23, 2016. Enceladus and Europa are all the rage these days, but classic Mars is still a great place to search for life. In fact, ESA’s ExoMars is scanning the […]

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Ep. 430: Coming Home from Mars, Part 2

Join us as we try to finish the interrupted episode Coming Home from Mars! Landing on the surface of Mars is very difficult. In fact, it’s probably the toughest planet to land on in the whole Solar System. Today we’ll talk about what it’s going to take to get to and return from Mars! We […]

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Ep. 430: Coming Home from Mars

Note – This episode was interrupted due to a power outage on Fraser’s end. They’ll reschedule to finish episode on 12/5 (most likely – Fraser is traveling this week!), and we’ll put the pieces together when we have them and release as audio podcast! Landing on the surface of Mars is very difficult. In fact, […]

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Ep. 429: Living on Mars

When Elon Musk announced plans to send humans to Mars, he conveniently left out one important aspect. How are we supposed to survive on a place this hostile to life? Seriously, Mars sucks, and it’s going to take some impressive techniques and technologies to make it on the Red Planet. We usually record Astronomy Cast […]

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Ep. 428: The Moons of Mars

We begin a miniseries on Mars. How many episodes will we do? Who knows? But we start today with a discussion of the two Mars moons, Phobos and Deimos. We usually record Astronomy Cast every Friday at 1:30 pm Pacific / 4:30 pm Eastern / 8:30 PM UTC (20:30 GMT). You can watch us live […]

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Ep. 410: Planet 9 Facts and Fiction

The discovery of Planet 9 has caused a wonderful, confusing uproar and a flood of misinformation in the news and social media. We’ll sort out what we actually know, what things just aren’t true, and what things might be possible! Download the show [MP3] | Jump to Shownotes | Jump to Transcript (more…)

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Ep. 409: Spin in the Solar System

The Solar System is a spinny place. Everything’s turning turning. But if you look closely, there are some pretty strange spins going on. Today we talk about how everything started turning, and the factors that still “impact” them today. Download the show [MP3] | Jump to Shownotes | Jump to Transcript (more…)

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Credit: NASA/JPL

Ep 387: Water on Mars… Again

Have you heard the big news? NASA has reported that Mark Watney is alive and well on the surface of Mars. No, wait, they’ve reported that there’s water on Mars. Didn’t they already report this? Today we’ll update you on the latest discovery and what this means for the search for life on Mars. Download […]

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Hubble Space Telescope. Image credit: NASA

Ep 386: Orbiting Observers

The atmosphere keeps us alive and breathing, but it really sucks for astronomy. Fortunately, humanity has built and launched space telescopes that get above the pesky atmosphere, where the skies are really clear. Let’s take a look at the past, current and future of orbital observation. Download the show [MP3] | Jump to Shownotes | […]

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