What is a Parsec?

Curiosity Daily


Sect is a real astronomical unit of measurement with cool origins. Yes. It measures distance not time. Yes. The term was used improperly in the original Star Wars. Yes. I will. Absolutely get to that in a few minutes. No, Ashley, you're not getting out of this one. I love Star Wars that I'm cost played Star Wars character. This is true. Well, we're all gonna love stores by the end of this. Here's the deal. One person is a quivalent to three points to six late years. That's nineteen trillion miles or thirty one trillion kilometers, if that seems excessive that's because it absolutely is. But when it comes to measuring astronomically large distances between. Objects that are beyond our solar system. Excessively large is just right. I said beyond our solar system, by the way for you to travel one parcel from earth. You would have to go from here to the sun and back two hundred six thousand two hundred sixty five times, I told you it was big the word purse that comes from two words Pera lax and our second para lacks describes when an object's location seems to have changed because your location changed. Astronomers use para lax to judge the distance of object in the sky, if you know, how far the earth has moved and you can measure how far the object moved across its starry backdrop you can judge distance. You actually use parallel to judge the distance of things all the time. You're too is see the world from slightly different angles, and your brain crunches, the numbers to tell you how far away everything is from you. The second half of Parsi refers to an arc second in arc. Second is part of a measurement of an angle. You know, how a circle is three hundred sixty degrees. Imaginer standing with a full view of the horizon around you if you sliced the horizon into three hundred sixty degrees each degree would be about twice the width of the full moon divide one of those degrees into sixty pieces, and you get the width of an arc minute divide. One of those up by sixty again, and you get an arc second. Putting it all together. A par sec is the Pera lacks of one arc second. In other words, if an object in the sky moves by one arc second when the earth moves by one astronomical unit. Then the object is one par cycle way to put that in perspective. Proxima centauri is the star. That's our closest neighbor, and it's one point three par away for more perspective the millennium falcon made the kessel run in twelve par sex, and I'm sorry pedants. But before you go criticizing stores for this, quote, unquote mistake, I you need to understand what the kessel run actually is you'll feed skip forward thirty seconds or so if you can't handle my nerdiness in Star Wars, Ken. In the kessel run is a route used by smugglers to transport in illicit substance from minds on the planet kessel through a region of space that belongs to the galactic empire. So it's an illegal smuggling route. And this route includes a cluster of black holes known as the Ma as you know, the shortest distance between two points is a straight line. So when Hans solo said he made the kessel run in twelve par sex. He was referring to his daring knish and piloting skills and the sophisticated computer on the money on falcon that he was able to use to navigate close to those black holes while not getting sucked in I was aware of this reading books from the Star Wars expanded universe. And I was a kid, but thanks to Disney. They are no longer canon. But they also address this in the twentieth. Eighteen films solo Star Wars story, which I still have not seen. But they address all of this after the movie happened. Does doesn't matter doesn't make just made it up afterward to make that line? Okay. To work. No, still works. That is art. That's how you craft a story. I think this is the biggest debate we've ever had in this.

Coming up next