Archive | Physics

Ep. 479: Rockets pt. 1- What Does “Single Stage To Orbit” Really Mean?

To celebrate the launch of the Falcon Heavy, we figured it was time for an all new series, this time on the rockets that carry us to space. Today we’re going to talk about why single stage to orbit rockets are so difficult to carry out. We usually record Astronomy Cast every Friday at 3:00 […]

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Updated Audio: Ep. 475: Fast Radio Bursts

If you got the previous version of Ep. 475 with bad audio, here’s the fixed version! You know what’s fun? Mysteries. Here’s one: fast radio bursts. Astronomers have been detecting mysterious one-time signals from across the sky. What’s causing them? Nobody knows for sure, but the search is on to get to the bottom of […]

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Ep. 475: Fast Radio Bursts

The initial release of this audio was glitchy. We’ve fixed it now, so please re-download. You know what’s fun? Mysteries. Here’s one: fast radio bursts. Astronomers have been detecting mysterious one-time signals from across the sky. What’s causing them? Nobody knows for sure, but the search is on to get to the bottom of them. […]

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Ep. 474: Predictions for 2018

Join us at a special date/time for this episode! Pamela’s traveling so we’re recording this on Saturday, 1/6/2018, at 2 pm EST / 11 am PST / 19:00 UTC! Phew, 2018, time to press the reset button and enjoy a whole new year of space exploration and space science. What’s coming up this year? What […]

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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. 465: Exploiting Interfering Light

Electromagnetic radiation, also known as “light” is pretty handy for astronomers. They can use it to directly and indirectly observe stars, nebula, planets and more. But as you probably know, light can act like a wave, creating interference patterns tto teach us even more about the Universe. We usually record Astronomy Cast every Friday at […]

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Ep. 444: Fractals

For this historic 444th episode of Astronomy Cast, we talk about fractals. Those amazing mathematical visualizations of recursive algorithms. What are they, how do you get them? Why are they important? We usually record Astronomy Cast every Friday at 1:30 pm PDT / 4:30 pm EDT/ 20:30 PM UTC (8:30 GMT). You can watch us […]

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Ep. 443: Destroy and Rebuild Pt. 7: Tsunamis

Surf’s up! Today we’re going to be talking about one of the most devastating natural disasters out there: tsunamis. We’re talking huge waves that wreck the seashore. But it turns out, there many ways you can get a tsunami, and one of those has to do with space. We usually record Astronomy Cast every Friday […]

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Ep. 442: Destroy and Rebuild Pt. 6: Magnetic Pole Reversal

If we look back into the geologic record of the Earth, it appears that our planet’s magnetic field flips polarity every few hundred thousand years or so. Why does this happen? When’s it supposed to happen next? Is it dangerous? We usually record Astronomy Cast every Friday at 1:30 pm Pacific / 4:30 pm Eastern […]

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