Astronomy Cast
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Astronomy Cast takes a fact-based journey through the cosmos as it offers listeners weekly discussions on astronomical topics ranging from planets to cosmology. Hosted by Fraser Cain (Universe Today) and Dr. Pamela L. Gay (CosmoQuest), this show brings the questions of an avid astronomy lover direct to an astronomer. Together Fraser and Pamela explore what is known and being discovered about..
Astronomy Cast
2M ago
In this bonus episode, we bring you behind the scenes audio from our June 10 pre-show discussion about the “far too much news” that occurred the week of June 3, 2024.
The post BONUS: The Week of Too Much News appeared first on Astronomy Cast ..read more
Astronomy Cast
2M ago
Normally, Pamela refuses to think about the future. But today, on our final episode before hiatus, she’s throwing out those rules. Here’s what we’re excited about for the future, especially in the next couple of months until we return in September
The post #725: Looking ahead appeared first on Astronomy Cast ..read more
Astronomy Cast
2M ago
It’s almost time for our summer hiatus. A time to catch up on all that reading. We’ll give you some book recommendations, and what we’re hoping to read during the summer.
The post #724: Summer Science & SciFi Reads appeared first on Astronomy Cast ..read more
Astronomy Cast
3M ago
Astronomers have discovered thousands of exoplanets, revealing entirely new types of worlds that we don’t have in the Solar System. It is enough to start getting a rough sense of what kinds of planets are out there. What’s the big picture ..read more
Astronomy Cast
3M ago
Here’s a familiar question: how’s the weather? We’re familiar with the weather on Earth and telescopes and missions are watching the weather on other planets in the Solar System. But for the first time in history, astronomers can now answer that question for exoplanets, located light-years away from us ..read more
Astronomy Cast
3M ago
Most of the exoplanets we’ve found are around stars, where they belong. But a few have been found free-floating in interstellar space. The evidence is growing that there are a lot of them out there, maybe even more than planets with stars. How do they form and how can we learn more about them ..read more
Astronomy Cast
4M ago
Our galaxy series continues with elliptical galaxies. Unlike other types, these are large, smooth with very few distinguishing features. They’re filled with red and dead stars, a clue to their evolution ..read more
Astronomy Cast
4M ago
Our galaxy series continues, on to spiral galaxies. In fact, you’re living in one right now, but telescopes show us the various shapes and sizes these galaxies come in. Thanks to JWST, we’re learning how these spirals got big, early on in the Universe.
Image: M33
Transcript
(Automatically generated)
Fraser Cain [00:01:11] Astronomy Cast episode 719 – The Galaxy series: Spiral Galaxies. Welcome to Astronomy Cast, a weekly fact based journey through the cosmos where we help you understand not only what we know, but how we know what we know. I’m Fraser Cain the publisher of Universe Today ..read more
Astronomy Cast
4M ago
It’s time to begin a new mini-series, where we’ll look at different classes of galaxies. Today, we’ll start with the dwarf galaxies, which flock around larger galaxies like the Milky Way. Are they the building blocks for modern structures?
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Astronomy Cast
4M ago
How old is that star? That planet? That nebula? Figuring out the ages of astronomical objects is surprisingly challenging. Fortunately, astronomers have developed a series of techniques they can use to work out the ages of stuff.
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