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Astronomy Cast

Ep. 786: Wolf-Rayet Stars

Astronomy Cast

Astronomy Cast

Natural Sciences, Science, Astronomy

4.83.4K Ratings

🗓️ 16 March 2026

⏱️ 34 minutes

🧾️ Download transcript

Summary

Astronomy Cast Ep. 786: Wolf-Rayet Stars By Fraser Cain & Dr. Pamela Gay Streamed live on Mar 9, 2026. You think the Sun is a terrifying ball of fire and fury? Wait until you learn about today's topic: Wolf-Rayet stars! These are massive, dying stars hurling their outer layers out into space before detonating as supernovae. Big stars live brief lives, and Wolf-Rayet stars are the punctuation mark we see before things go supernova. Image Credit: NASA, ESA, CSA, STScI; Science: Yinuo Han (Caltech), Ryan White (Macquarie University); Image Processing: Alyssa Pagan (STScI) Learn more here: https://science.nasa.gov/asset/webb/w... This show is supported through people like you on Patreon.com/AstronomyCast In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero

Transcript

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0:00.0

I'm

0:02.0

Oh Thank you. I'm going to Astronomycast, Episode 786, Wolf Rai Stars.

0:53.3

Welcome to Astronomycast, our weekly facts-based journey through the cosmos, where we help you understand not only what we know, but how we know what we know. I'm Vizur Cain. I'm the publisher of the University with me, as always is Dr. Pamela Kay, a senior scientist for the Planetary Science Institute and the director of Cosmon Quest. Hello, Pamela. You didn't ask me how I'm doing, and I don't know what to say.

1:14.5

Other than hello, have you seen a bear yet? No, no bears yet. No. But you still have daffodils?

1:22.6

Pine Martin, no daffodils yet. Pine Martin, crocuses. Okay. And our various flowering fruit trees are

1:30.3

about to flower. So we're about to have the, uh, the flowering cherry festival here on my

1:38.5

property. So apart from that. Um, no, it's good.

1:49.3

But we're going through all of the things that we have in my spring calendar.

1:55.9

I think I mentioned this years ago that we put down a calendar of all of the momentous events that happened. So you just have four seasons.

1:58.3

You actually have about 50.

2:00.1

And a bunch of them are showing up a lot earlier.

2:02.1

So we had the frogs going berserk about a week early. The crocuses are up a little early, but it is sort of interesting. I mean to like keep track of them. And so we can like see how the dates change from various events happening. But yeah. Yeah. And then, and the big thing, of course, is the herring are spawning,

2:20.1

which is, like, just like search for herring spawn Vancouver Island, and it will blow your mind.

2:26.4

It is the largest biomass movement on earth, bigger than will the beasts, bigger than

2:32.9

anything. It is out of this world.

2:35.7

And when it happens, it is, it changes our landscape, changes the beaches, changes the oceans,

2:42.3

the wildlife everywhere. It's a, it's next level. That's, that's kind of amazing and also very

2:48.5

gross simultaneously. Yes, yeah, yeah.

2:52.3

Let's just say that spawning heron means that everything on the beach is covered,

2:59.0

in some cases, multiple feet of material.

3:05.8

Yeah, yeah, that's the correct euphemism.

3:08.3

Yeah, you got to work boots to walk through what's on the beaches.

...

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