How scientists fixed Voyager 1 at the edge of the Solar System

Voyager 1 is again involved with mission management after being offline for 5 months.

Essentially the most distant human-made object from Earth can now rejoin its sibling Voyager 2 in exploring the outer areas of our Photo voltaic System, the place no different spacecraft have gone earlier than.

NASA’s Jim Inexperienced reveals what we discovered from the Voyager spacecraft

NASA's Voyager 1 spacecraft launched from the Kennedy Space Center Launch Complex in Florida on 5 September 1977. Credit: NASA/JPL-Caltech
NASA’s Voyager 1 spacecraft launched from the Kennedy Area Heart Launch Complicated in Florida on 5 September 1977. Credit score: NASA/JPL-Caltech

Voyager 1 and a couple of each launched from Earth in 1977 and have been crusing outwards into the depths of interstellar area ever since.

On 14 November 2023, Voyager 1’s regular science and engineering information transmissions abruptly grew to become unintelligible.

The spacecraft seemed to be receiving instructions and working usually, permitting the workforce to determine the issue.

After months of testing, they discovered a single chip had stopped engaged on one of many spacecraft’s three onboard computer systems, the flight information subsystem (FDS).

That is the system answerable for collating Voyager 1’s science and engineering information earlier than sending it again to Earth.

With out the operational code often saved on the chip, the FDS was now producing gibberish.

Voyager's 60-frame Solar System portrait. Credit: NASA/JPL-Caltech
Voyager’s 60-frame Photo voltaic System portrait. Credit score: NASA/JPL-Caltech

How they mounted Voyager within the depths of area

With no option to repair the chip, the workforce as a substitute break up the code up so it could possibly be saved elsewhere. Initially they centered on reacquiring the engineering information, sending an replace to Voyager 1 on 18 April 2024.

It takes 22.5 hours for a radio sign to journey the 24 billion kilometres (15 billion miles) out to Voyager 1, and the identical again, that means the spacecraft’s operations workforce didn’t obtain a message again till 20 April.

However when it arrived, they’d usable information from Voyager 1 for the primary time in 5 months.

In 2012, Voyager 1 crossed into interstellar area, having handed by means of what’s often known as the heliopause, the sting of the protecting bubble across the Solar created by its photo voltaic wind.

After 47 years, each spacecraft are starting to indicate their age.

They’re powered by radioactive materials, which is slowly decaying and lowering their energy output.

Voyager 2 has passed through the heliopause, into interstellar space. The bubble of particles and magnetism surrounding the Sun known as the heliosphere is stretched out behind the Sun as it moves through the Galaxy. Image Credit: NASA
The Voyagers handed by means of the heliopause, into interstellar area. The bubble of particles and magnetism surrounding the Solar often known as the heliosphere is stretched out behind the Solar because it strikes by means of the Galaxy. Picture Credit score: NASA

Starting of the top for the Voyagers?

For a number of years, the operations workforce have been step by step shutting off heaters, back-ups and different non-essential parts to protect energy for key operational and scientific devices. 

Round 2026, nonetheless, they should start shutting down science devices.

The Voyagers will maintain transmitting even as soon as all their scientific programs are shut down.

Nevertheless, by round 2036 they’ll move past the vary of receivers on Earth, persevering with their journey additional into the Galaxy in radio silence. 

The Voyager spacecraft’s finest pictures

www.nasa.gov 

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