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Astronomy Cast Episode 520 Transients Part 2. Welcome to Astronomy Cast, a weekly facts-based journey through the

Athe Light. It's possible that I'm going to be going back to Iceland at some point. So there's a lot of really interesting trips coming up.

So check it out. And I hope to see you in Tucson and Vegas. Excellent. Alright, this is our second

episode in a two-part series where we look at Transients in Astronomy. Last week's

episode we talked about the things that change here in our own solar system. Now we'll talk

about everything else in the Milky Way and beyond. Alright Pamela,

we'll ask who saw our heroes. We were talking about asteroids and comets and things crashing into

the moon and things crashing into Jupiter and potential extracellular comets blasting

through the solar system. But this idea of Transients, the fact that the Universe

changes, extends out way beyond the solar system all the way out.

It is true. It is true. And the techniques that we use to observe a

transient phenomena don't really change, but how they move through our images,

how they vary in our images, does change from inside our solar system to outside our solar system.

Let's face it, things inside our solar system. It's a lot easier to see them moving.

And so the fact that an asteroid is flying by the Earth, that makes it a transient

phenomena. Now as we look at it, the sky, the fact that Bernard star is creeping across

...