El disco de oro: un mensaje de nosotros para ellos.

In 1977 NASA launched Voyager 1 and Voyager 2, with the aim of studying space beyond our solar system. Unfortunately, despite having been created considering many factors so they could resist the long journey through the cosmos, both will cease to function in the year 2030, or perhaps earlier. Both, for the moment, already have measurement instruments that slowly begin to lose power. This, because their power source will no longer be able to supply the energy needed to keep the satellites’ systems alive. This has several consequences, the main one would be that we will not be able to receive information about what they will see in their journey and the silence will be eternal. However, the Voyager satellites still have a mission: to be a message themselves for that life that possibly exist outside our solar system. Or maybe it is a message to ourselves, if we ever get out of our solar system and become an interstellar species. But what do I mean by this? Within each Voyager satellite, there is a copper disc with a gold cover. This is a disc similar to a vinyl one, only that, unlike a vinyl record, it contains a lot of messages. Unfortunately, due to copyright issues I can not show them here, but in the description you can find everything on the disc. The disc contains images, music, sounds and greetings from all over the planet Earth. These contents were chosen by a committee commanded by Carl Sagan, who believed the disc will be found only if there are advanced space civilizations in interstellar space. Which opens a question: in the given case that they will find it… how will they be able to listen and reproduce its content? The information is recorded analogously on the disc, in order to reproduce its contents. It carries a device that is a portable audio player; and, on one side of the disc, there are diagrams that explain how to use it. But this side gives more than a simple instruction on how to play a vinyl. Here, we can divide the disc into 5 parts. The first part illustrates how to use the device to reproduce its content; the second part shows how the images are recorded and how is the waveform of one of them, followed by the time that each line scan lasts; the third part deals with how an image is formed and in what direction it is formed, if they manage to read the information correctly, the first image that will be shown is that of a circle, the diagram’s fourth part illustrates a time reference using a hydrogen atom in its lowest energy state, indicating, with an electron and a proton, bothe the initial and the final spin (theoretically, this will indicate the time base required to decode the disc messages); finally, there is a map of our sun, taking 14 pulsars in different directions as reference, which are coded in binary indicating the frequency of each one. Obviously, what I just told you is a great simplification, but those who may one day find it must have that ability to read the contents of the disc. I had help from Wikipedia and NASA, but they will have to find out just by looking at the illustrations. That scares me a little, the day humanity disappear and everything we have built be in the past, those two discs will be our legacy, which we do not know for sure if will ever be found. And if they are found, nothing guarantees us that the finders will understand it. But Voyager is not a normal message, at some point it will become a vestige of what we were, the hope we had and the excitement we had to make contact with our nearest neighbor. This is a message from us, humanity, to everyone who is out there. I would like to thank my patreons, like Atahualpa Bravo, Héctor Pulido, Jesús Adán, Kalcifer Vallarta, Maximiliano Camilo, Shenka_007 and Yago Galleta, by helping me to bring this golden message of… tacos for you all!… I mean, of science for you all. You already know that, if you want to support me, all you have to do is go to: Thank you very much and until next time!

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