In 1977, NASA sent two probes into space within the framework of the Voyager mission. The intention of these launches was to travel through the entire solar system and explore the furthest borders of our planetary system and of all objects that, although are very far away, still feel the gravitational pull of the sun.
Voyager probes have since accomplished that mission and are at the outer edges of the solar system. However, they still send constant information to Earth, within what constitutes the second and perhaps more transcendental part of their mission. That of serving as the most distant messengers of the existence of humanity and of the pale blue dot in which we live.
After several years of interstellar travel, Voyager 1 has transmitted messages back to Earth that gives us a glimpse of what the universe is like outside our solar system.
As it moves away from the influence of the Sun, Voyager begins to capture signals and measure the density of outer space and in this task, it has captured impressive sounds from the universe around it in what would be the first time that we experience so far away distances semi-in-person.
“This detection offers us a new way to measure the density of interstellar space and opens up a new pathway for us to explore the structure of the very nearby interstellar medium,” said Stella Ocker, a Ph.D. student at Cornell University in Ithaca, New York, and member of the Voyager team.
A strange hum is what can be identified in the video and audio released by NASA a few days ago. They are the shock waves of the movement of energy masses through space.
The long and probably infinite journey of the Voyager probes is now just over 40 years old but is just beginning and there will come a point where the transmission of information from the probes back to Earth will not be possible due to the distance but until we have to say goodbye to our messengers we have scientists are making the most of the invaluable information it provides us to better understand the mysteries of our universe.