Voyager 1 was launched waaaaaay back in 1977. I would have been 4 years old then! It’s an incredible achievement that technology that was built THAT long ago is still working. Yet here we are in 2024, Voyager 1 and 2 are getting older. Earlier this week, NASA had to turn off one of the radio transmitters on Voyager 1. This forced communication to rely upon the low-power radio. Alas technology around 50 years old does sometimes glitch and this was the result of a command to turn on a heater. The result was that Voyager 1 tripped into fault protection mode and switch communications! Oops.  Voyager 1 is a NASA space probe launched on September 5, 1977, as part of the Voyager program to study the outer planets and beyond. Initially, Voyager 1’s mission focused on flybys of Jupiter and Saturn, capturing incredible images before traveling outward. In 2012, it became the first human-made object to enter interstellar space, crossing the heliopause—the boundary between the influence of the Sun and interstellar space. It now continues to  to send data back to Earth from over 22 billion km  away, helping scientists learn about the interstellar medium. There is also a “Golden Record” onboard which contains sounds and images of life on Earth, Voyager 1 serves as a time capsule, intended to articulate the story of our world to any alien civilizations that may encounter it. The Ringed Planet Saturn Just a few days ago on 24 October, NASA had to reconnect to Voyager 1 on its outward journey because one of its radio transmitters had been turned off! Alien intervention perhaps! Exciting though that would be, alas not.  The transmitter seems to have been turned off as a result of one of the spacecraft fault protection systems. Any time there is an issue with onboard systems the computer will flip the systems into protection mode to protect any further damage. If the spacecraft draws too much power from the batteries, the same system will turn off less critical systems to conserve power. When the fault protection system kicks in, it’s then the job of engineers on the ground fixing the fault. Artist rendition of Voyager 1 entering interstellar space. (Credit: NASA/JPL-Caltech) There are challenges here though. Due to the immense distance to Voyager 1, now about 24 billion km away, any communications to or from takes almost 23 hours to arrive. A request for data for example means a delay of 46 hours before the request arrives and the data returned! Undaunted, the team sent commands to Voyager 1 on the 16 October to turn on a heater but, whilst the probe should have had enough power, the command triggered the system to turn off a radio transmitter to conserve power. This was discovered on 18 October when the Deep Space Network was no longer able to detect the usual ping from the spacecraft.  The engineers correctly identified the likely cause of the problem and found Voyager pinging away on a different frequency using the alternate radio transmitte. This one hadn’t been used since the early 19080’s! With the fault identified, the team did not switch immediately back to the original transmitter just yet in case the fault triggered again. Instead,they are now working to understand the fault before switching back.  Until then, Voyager 1 will continue to communicate with Earth using the lower power transmitter as it continues its exploration out into interstellar space.  Source : After Pause, NASA’s Voyager 1 Communicating With Mission Team The post Voyager 1 is Forced to Rely on its Low Power Radio appeared first on Universe Today.

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by Matt Agorist, The Free Thought Project: The U.S., Canada and Mexico last week launched a joint pandemic preparedness initiative that one critic warned could empower the WHO to impose global control measures like vaccine passports and policies targeting the “infodemic.” The U.S., Canada and Mexico launched a joint pandemic preparedness initiative they said will unite the […]

Explore the fascinating history of contact lenses, from early ideas by Leonardo da Vinci to the groundbreaking invention of soft hydrogel lenses by Otto Wichterle and Drahoslav Lim. #Technology #CzechInventions #ContactLenses