Our Place in Space

Automatic TRANSCRIPT

Hello and welcome to misinformation, a Trivia podcasts for ladies and gents who have cooled Trivia and sticking it to join teams at pub quiz where your hosts I'm Lauren in I'm Julia Hey Schule hi, Laurin. We are just were like cranking through some episodes lately. We've been like recording a bunch of Italian. This is our. This is our finishing episode for this recording. And I figured you know what? We haven't touched on space in a while you know. I did that long series about dads and space. Aged MOMS Mason to the mission to Mars like I'm going to go back. To back to the beginning, WE'RE GONNA go back to the beginning, and even though you fear it, even though I fear it. It's like you know like that's why they why women love stories about serial killers, because ultimately we are the ones who will probably be murdered by a serial killer, just like statistically, so you have to face that fear and somehow love it. Together hair your brain. Get to know your enemy. Know your enemy exactly you gotTa. Know your enemy, so my enemy is space. I am at a constant battle with space and I know I'll lose on. Aren't we all time and space so today? I've decided to go back to the beginning. Go get like some elementary level info and today. We're GONNA. Talk about the solar system. Did you build a model for this sir, Oh, no, I should have model. Scrap. Is Episode Comeback When you alcon back? Steve has a model. He'll make a full like. One of those rotating. Oh, yeah, own. An oratory. Ory himself. He's GonNa. He's GonNa. WanNa. Make an ordinary, so you're welcome. Yeah, thanks! It's going to be my whole upstairs anyway. So just as an FYI, I I will not be touching on earth because we live here. You know what earth is A. And also I've already done an episode on Mars. So we'll just be doing the rest of the solar system to. Be going in order. To begin with. What is the solar system? The planetary system we call home is located in outer spiral arm of the Milky Way Galaxy. That's our neighborhood. Our solar system consists of our star. The Sun and everything bound to it by gravity. The planets mercury Venus, Earth Mars Jupiter Saturn Uranus and Neptune as well as dwarf planets, such as Pluto dozens of moons and millions of asteroids, comets and meteoroid. The solar system also includes the Kuyper belt that lies past Neptune's orbit, which way back there. This is a sparsely occupied ring of bodies, almost all smaller than the most popular Kuyper. Bell Object, which is Dorf Planet Pluto and we will talk about him in a minute. The most popular, the most popular of the Kuyper belt objects. So beyond the fringes of the Kuyper belt is the or cloud. This junk, yes, the worked cloud over RT cloud. This giant spherical shell surrounds our solar system like a big old bubble. And it has never been directly observed, but its existence is predicted based on mathematical models and observations comments that likely originate from there. So. The or cloud is made of icy pieces of space debris, the sizes of mountains and sometimes larger orbiting our son as far as one point six light years away. This shell of material is thick extending from five thousand astronomical units to one hundred thousand astronomical units, so an astronomical unit just for Reference One Astronomical Unit or AU is the distance from the sun to the earth. And that is about ninety three million miles or one hundred and fifty million kilometers. So one astronomical unit is ninety three million miles so. The ORT cloud is anywhere from five thousand, two hundred thousand astronomical units, so it's enormous. God I. Don't think about okay. The ordered cloud is also the boundary of the Sun's Gravitational influence where orbiting objects can turn around and return closer to our son. So that's that's the extent of how far the sun's gravity pull. Goes, to. The Sun's helium fear doesn't extend quite as far so that's like how far the light can travel from the sun. healers the bubble created by the solar wind, which is a stream of electrically charged gas, blowing outward from the sun in all directions, so it's like the soup that the sun is like floating that creates. The boundary where the solar wind is abruptly slowed by pressure from interstellar gases is called the termination shock, so it's like the edge of the bubble. Okay where it crosses into it. this edge occurs between eighty one hundred astronomical units, so that's the outer boundary of the Helius fear. And I've mentioned this before, but to NASA, spacecraft launched in seventy seven have crossed the termination shock, voyager, one and two thousand four in Voyager, two in two thousand seven. for more on that checkout episodes thirty five moms and space for the voyager program. It's good.

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