Tag Archives | Earth

Ep. 439: Destroy and Rebuild, Pt. 3: How Do We Terraform Earth?

We always want to talk about how we can make Mars more Earth like, but the reality is that we’re making Earth more Venus-Like. We’re Venusforming Earth. What are the various factors we’re impacting on a global scale, and how can we fix them? We usually record Astronomy Cast every Friday at 1:30 pm Pacific […]

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Ep. 422: Geysers

So if you’ve been to Yellowstone National Park, you’ve seen one of the most amazing features of the natural world – geysers. In today’s episode, we’re going to talk about geysers on Earth, and where they might be in the solar system. We usually record Astronomy Cast every Friday at 1:30 pm Pacific / 4:30 […]

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Voyager 2

Ep. 384: Escaping Probes

The gravity of the Earth is a tough thing to escape, but breaking free from the gravity of the Sun is on a whole other level. But humans have achieved this amazing accomplishment, and right now there are several spacecraft leaving the Solar System and never coming back. Download the show [MP3] | Jump to […]

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A view of rivers in Montana, USA, from the ISS. Credit: ESA/Luca Parmitano.

Ep. 363: Where Did Earth’s Water Come From?

Where on Earth did our water come from. Well, obviously not from Earth, of course, but from space. But did it come from comets, or did the water form naturally right here in the Solar System, and the Earth just scooped it up?? Download the show [MP3] | Jump to Shownotes | Jump to Transcript […]

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hockey stick

Ep. 308: Climate Change

When it comes to carbon dioxide, just a little goes a long way to warming the planet. Unfortunately, we’ve been dumping vast amounts into the atmosphere, recently passing 400 parts per million. Let’s look at the science of the greenhouse effect, and how it’s impacting our global climate. Download the show [MP3] | Jump to […]

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ring of fire

Ep. 307: The Pacific Ring of Fire

The Pacific Ring of Fire wraps around the Pacific Ocean, including countries like Japan, Canada, New Zealand and Chile. And the inhabitants within those countries are prone to… oh… killer earthquakes, volcanoes and tsunamis. Let’s chat about the history of this region and the kinds of risks they face. Download the show [MP3] | Jump […]

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