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Ask a Spaceman!

AaS! 152: Could We Really Terraform Mars?

Ask a Spaceman!

Paul M. Sutter

Astrophysics, Science, Cosmos, Holes, Black, Astronomy, Natural Sciences, Universe, Cosmology, Space, Physics

4.8853 Ratings

🗓️ 18 May 2021

⏱️ 37 minutes

🧾️ Download transcript

Summary

What killed Mars billions of years ago? How can we kickstart a warming trend to transform Mars to look like Earth? What kind of technology do we need, and how well will it work? I discuss these questions and more in today’s Ask a Spaceman!

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Big thanks to my top Patreon supporters this month: Justin G, Matthew K, Chris L, Barbara K, Duncan M, Corey D, Justin Z, Neuterdude, Nate H, Andrew F, Naila, Aaron S, Scott M, Rob H, Lowell, David B, Frank T, Tim R, Alex P, Tom Van S, Mark R, Alan B, Craig B, Richard K, Steve P, Dave L, Chuck C, Stephen M, Maureen R, Stace J, Neil P, lothian53 , COTFM, Stephen S, Ken L, Debra S, Alberto M, Matt C, Ron S, Joe R, Jeremy K, David P, Norm Z, Ulfert B, Robert B, Fr. Bruce W, Catherine R, Nicolai B, Sean M, Edward K, Callan R, Darren W, JJ_Holy, Tracy F, Tom, Sarah K, Bill H, Steven S, Jens O, Ryan L, Ella F, Richard S, Sam R, Thomas K, James C, Jorg D, R Larche, Syamkumar M, John S, Fred S, Homer V, Mark D, Brianna V, Colin B, Bruce A, Steven M, Brent B, Bill E, Jim L, Tim Z, Thomas W, Linda C, Joshua, David W, Aissa F, Tom G, Marc H, Avery P, Scott M, Michael G, Katelyn, Thomas H, and Farshad A!

Thanks to Cathy Rinella for editing.

Hosted by Paul M. Sutter, astrophysicist and the one and only Agent to the Stars (http://www.pmsutter.com).

Transcript

Click on a timestamp to play from that location

0:00.0

Mars stinks.

0:13.1

I mean, it's not the worst planet in the solar system, but it's not exactly the best one either.

0:19.8

I mean, look, look, there's no air.

0:22.6

Okay, there's a little bit of air, but it's less than 1% of Earth's atmospheric pressure.

0:28.8

And if I had less than 1% of the, like, say, income that I have now, money that I have now.

0:34.3

I would say I'd basically have no money.

0:36.8

I think that's fair. And what air there is, it that I have now. I would say I'd basically have no money. I think that's fair.

0:38.5

In what air there is, it's entirely poisonous carbon dioxide. If you're a plant, that's not so

0:44.5

bad, but I'm assuming most of you listening today are not plants. And so atmosphere made of

0:50.6

entirely carbon dioxide is not the best thing for you. Speaking of poisons,

0:57.0

this Martian soil is coated, soaked, whatever word you want to use in perchlorates, which you

1:06.7

might be more familiar with as an occasional source of rocket fuel.

1:13.0

Literal rocket fuel on the ground.

1:14.6

So if you ate Martian dust, you would just get a mouthful of rocket fuel.

1:19.3

I mean, come on.

1:21.3

Mars gets only 40% of the sunlight that the Earth does.

1:25.8

So it's never, ever going to beat that sunny tropical day on a beach, seaside resort

1:33.8

kind of vibe.

1:34.8

You're not getting that.

1:36.6

It has 60% of the Earth's gravity.

1:40.3

So even if you could live on Mars and hang out on Mars, you're going to deal with constant low gravity and all the nasty biological issues that come along with it, things that our astronauts are experiencing in microgravity situations.

1:55.2

We don't even know if, say, like, a fetus's spine will grow straight in the womb without our gravity and the strength of our gravity.

...

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