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NASA’s Voyager 1 Resumes Sending Engineering Updates to Earth

NASA’s Voyager 1 spacecraft is depicted in this artist’s concept traveling through interstellar space, or the space between stars, which it entered in 2012.

After some inventive sleuthing, the mission team can — for the first time in five months — check the health and status of the most distant human-made object in existence.

For the first time since November , NASA’s Voyager 1 spacecraft is returning usable data about the health and status of its onboard engineering systems. The next step is to enable the spacecraft to begin returning science data again. The probe and its twin, Voyager 2, are the only spacecraft to ever fly in interstellar space (the space between stars).

Voyager 1 stopped sending readable science and engineering data back to Earth on Nov. 14, 2023, even though mission controllers could tell the spacecraft was still receiving their commands and otherwise operating normally. In March, the Voyager engineering team at NASA’s Jet Propulsion Laboratory in Southern California confirmed that the issue was tied to one of the spacecraft’s three onboard computers, called the flight data subsystem (FDS). The FDS is responsible for packaging the science and engineering data before it’s sent to Earth.

After receiving data about the health and status of Voyager 1 for the first time in five months, members of the Voyager flight team celebrate in a conference room at NASA’s Jet Propulsion Laboratory on April 20.

The team discovered that a single chip responsible for storing a portion of the FDS memory — including some of the FDS computer’s software code — isn’t working. The loss of that code rendered the science and engineering data unusable. Unable to repair the chip, the team decided to place the affected code elsewhere in the FDS memory. But no single location is large enough to hold the section of code in its entirety.

So they devised a plan to divide the affected code into sections and store those sections in different places in the FDS. To make this plan work, they also needed to adjust those code sections to ensure, for example, that they all still function as a whole. Any references to the location of that code in other parts of the FDS memory needed to be updated as well.

The team started by singling out the code responsible for packaging the spacecraft’s engineering data. They sent it to its new location in the FDS memory on April 18. A radio signal takes about 22 ½ hours to reach Voyager 1, which is over 15 billion miles (24 billion kilometers) from Earth, and another 22 ½ hours for a signal to come back to Earth. When the mission flight team heard back from the spacecraft on April 20, they saw that the modification worked: For the first time in five months, they have been able to check the health and status of the spacecraft.

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During the coming weeks, the team will relocate and adjust the other affected portions of the FDS software. These include the portions that will start returning science data.

Voyager 2 continues to operate normally. Launched over 46 years ago , the twin Voyager spacecraft are the longest-running and most distant spacecraft in history. Before the start of their interstellar exploration, both probes flew by Saturn and Jupiter, and Voyager 2 flew by Uranus and Neptune.

Caltech in Pasadena, California, manages JPL for NASA.

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RCA Voyager 7-Inch Tablet 16GB 1.2GHz Quad-Core Android 6.0 - Charcoal

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• Introducing the RCA Voyager 7-inch Google Certified Tablet. 7" touchscreen, 1024 x 600 resolution, virtual keyboard with Swype
• 1.2GHz quad-core processor 1GB DDR of system memory Built-in 802.11 WiFi and Bluetooth v4.0
• 16GB onboard storage memory, additional memory via microSD card slot Front 1MP webcam with microphone, auto-focus and digital zoom microUSB 2.0 port, headphone jack, microphone jack Built-in speaker Rechargeable battery Weighs 0.61 lbs; 7.3" x 0.49" x 4.5" dimensions
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• Tablet PCs are compact, ultra-portable entertainment devices that let you read email, surf the Internet, read eBooks, view photos, play games, listen to music and watch video files. Most tablets are based on a smaller operating system, which allows you to purchase and download additional applications from supported stores. T

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Venturer Voyager 10 Pro 10.1″ Android Tablet with Detachable Keyboard, 2GB RAM, 32GB Storage, Quad-Core (CT9F0A 68R23)

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Take your entertainment on the go with tablet mode. The IPS display is perfect for streaming TV shows or scrolling through your photos. When it’s time to get some work done, you can transform it into a laptop with a detachable keyboard – ideal for responding to emails or finishing an essay. Snap a pic with the Voyager 10 Pro. The 2 MP main camera is great for taking a quick photo of your day out. And if you want to take a selfie or video call with your friends and family, there’s a front-facing camera too. Store your photos, videos, and music with the generous 32 GB built-in memory. If that’s still not enough space for all your holiday shots, you can always insert a microSD card for even more room.

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Well, hello, Voyager 1! The venerable spacecraft is once again making sense

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Members of the Voyager team celebrate at NASA's Jet Propulsion Laboratory after receiving data about the health and status of Voyager 1 for the first time in months. NASA/JPL-Caltech hide caption

Members of the Voyager team celebrate at NASA's Jet Propulsion Laboratory after receiving data about the health and status of Voyager 1 for the first time in months.

NASA says it is once again able to get meaningful information back from the Voyager 1 probe, after months of troubleshooting a glitch that had this venerable spacecraft sending home messages that made no sense.

The Voyager 1 and Voyager 2 probes launched in 1977 on a mission to study Jupiter and Saturn but continued onward through the outer reaches of the solar system. In 2012, Voyager 1 became the first spacecraft to enter interstellar space, the previously unexplored region between the stars. (Its twin, traveling in a different direction, followed suit six years later.)

Voyager 1 had been faithfully sending back readings about this mysterious new environment for years — until November, when its messages suddenly became incoherent .

NASA's Voyager 1 spacecraft is talking nonsense. Its friends on Earth are worried

It was a serious problem that had longtime Voyager scientists worried that this historic space mission wouldn't be able to recover. They'd hoped to be able to get precious readings from the spacecraft for at least a few more years, until its power ran out and its very last science instrument quit working.

For the last five months, a small team at NASA's Jet Propulsion Laboratory in California has been working to fix it. The team finally pinpointed the problem to a memory chip and figured out how to restore some essential software code.

"When the mission flight team heard back from the spacecraft on April 20, they saw that the modification worked: For the first time in five months, they have been able to check the health and status of the spacecraft," NASA stated in an update.

The usable data being returned so far concerns the workings of the spacecraft's engineering systems. In the coming weeks, the team will do more of this software repair work so that Voyager 1 will also be able to send science data, letting researchers once again see what the probe encounters as it journeys through interstellar space.

After a 12.3 billion-mile 'shout,' NASA regains full contact with Voyager 2

• interstellar mission

April 22, 2024

After Months of Gibberish, Voyager 1 Is Communicating Well Again

NASA scientists spent months coaxing the 46-year-old Voyager 1 spacecraft back into healthy communication

By Meghan Bartels

NASA’s Voyager 1 spacecraft is depicted in this artist’s concept traveling through interstellar space, or the space between stars, which it entered in 2012.

NASA/JPL-Caltech

After months of nonsensical transmissions from humanity’s most distant emissary, NASA’s iconic Voyager 1 spacecraft is finally communicating intelligibly with Earth again.

Voyager 1 launched in 1977 , zipped past Jupiter and Saturn within just a few years and has been trekking farther from our sun ever since; the craft crossed into interstellar space in 2012. But in mid-November 2023 Voyager 1’s data transmissions became garbled , sending NASA engineers on a slow quest to troubleshoot the distant spacecraft. Finally, that work has paid off, and NASA has clear information on the probe’s health and status, the agency announced on April 22.

“It’s the most serious issue we’ve had since I’ve been the project manager, and it’s scary because you lose communication with the spacecraft,” said Suzanne Dodd, Voyager project manager at NASA’s Jet Propulsion Laboratory in an interview with Scientific American when the team was still tracking down the issue.

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The Voyager 1 spacecraft is a scientific legend : It discovered that Jupiter’s moon Io, far from being a dead world like our own companion, is instead a supervolcanic world . The craft’s data suggested that Saturn’s moon Titan might have liquid on its surface. And for more than a decade, Voyager 1 has given scientists a glimpse at what space looks like beyond the influence of our sun.

Yet its long years in the harsh environment of space have done a number on the probe, which was designed to last just four years. In particular, degraded performance and low power supplies have forced NASA to turn off six of its 10 instruments, and its communication has gotten even spottier than can be explained by the fact that cosmic mechanics mean a signal takes nearly one Earth day to travel between humans and the probe.

When the latest communications glitch occurred last fall, scientists could still send signals to the distant probe, and they could tell that the spacecraft was operating. But all they got from Voyager 1 was gibberish—what NASA described in December 2023 as “a repeating pattern of ones and zeros.” The team was able to trace the issue back to a part of the spacecraft’s computer system called the flight data subsystem, or FDS, and identified that a particular chip within that system had failed.

Mission personnel couldn’t repair the chip. They were, however, able to break the code held on the failed chip into pieces they could tuck into spare corners of the FDS’s memory, according to NASA. The first such fix was transmitted to Voyager 1 on April 18. With a total distance of 30 billion miles to cross from Earth to the spacecraft and back, the team had to wait nearly two full days for a response from the probe. But on April 20 NASA got confirmation that the initial fix worked. Additional commands to rewrite the rest of the FDS system’s lost code are scheduled for the coming weeks, according to the space agency, including commands that will restore the spacecraft’s ability to send home science data.

Although, for now, Voyager 1 appears to be on the mend, NASA scientists know it won’t last forever. Sooner or later, a glitch they can’t fix will occur, or the spacecraft’s ever dwindling fuel supply will run out for good. Until then NASA is determined to get as much data as possible out of the venerable spacecraft—and its twin, Voyager 2, which experienced its own communications glitch earlier in 2023 .

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‘humanity’s spacecraft’ voyager 1 is back online and still exploring.

After five months of glitching, the spacecraft is talking to Earth again from interstellar space

The Voyager 1 spacecraft (illustrated) is back online after a few months of transmitting garbled data. It’s now poised to continue its exploration of interstellar space.

JPL-Caltech/NASA

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By Ramin Skibba

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After months of challenging trouble-shooting and suspenseful waiting, Voyager 1 is once again talking to Earth.

The aging NASA spacecraft, about 24 billion kilometers from home, began transmitting garbled data in November. On April 20, NASA scientists got the probe back online after uploading new flight software to work around a chunk of onboard computer memory that had failed. They’re now receiving data about the spacecraft’s health and hope to hear from its science instruments again in a few weeks, says Suzanne Dodd, the mission’s project manager at NASA’s Jet Propulsion Laboratory in Pasadena, Calif.

That means the iconic craft could be on a path to recovery — and to continue its exploration of interstellar space.

Launched in 1977, Voyager 1 briefly visited Jupiter and Saturn before eventually departing the solar system. It and its twin, Voyager 2, are the longest-operating space probes, now tasked with studying far-flung solar particles and cosmic rays. In particular, the probes have been monitoring the changing of the sun’s magnetic field and the density of plasma beyond the solar system, yielding information about the farthest reaches of the sun’s influence .

“The spacecraft is really remarkable in its longevity. It’s incredible,” Dodd says. “We want to keep Voyager going as long as possible so we have this time record of these changes.”

Voyager 1 and 2, cruising along diverging paths, made history by crossing the heliopause in 2012 and 2018 , respectively ( SN: 9/12/13; SN: 12/10/18 ). At nearly 18 billion kilometers from the sun, that’s long been considered the outer extent of our star’s magnetic field and the solar wind, the boundary before interstellar space.

Since then, Dodd says, the science team has made some surprising findings ( SN: 11/4/19 ). For one, they’ve determined that the heliosphere, the huge bubble of space dominated by the solar wind, might not be spherical but have one or two tails, making it shaped like a comet or a croissant.

And thanks to Voyager, scientists now know that, despite expectations otherwise, the sun’s magnetic field and charged particles actually remain significant even beyond the heliopause, says David McComas, a Princeton University astrophysicist not involved in the mission.

Some theories predicted a serene environment in the distant oceans of interstellar space, but the Voyagers keep passing through waves of charged particles, indicating that the solar magnetic field still holds some sway there. What’s more, the probes’ data have shown how ripples in the field form bubbles at the edge of the solar system, which is more frothy and dynamic than expected.

Other missions have begun building on Voyager’s solar physics research. These include NASA’s Interstellar Boundary Explorer, or IBEX, and the Interstellar Mapping and Acceleration Probe, or IMAP, which is set to launch next year. Earth-orbiting IBEX has been measuring high-energy particles to map the heliosphere for 15 years, whereas IMAP will orbit between the sun and Earth, giving it an uninterrupted view of the sun as it monitors the galactic cosmic rays that manage to filter through the heliosphere.

“There’s a huge synergy between the Voyagers and both IBEX and IMAP,” says McComas, principal investigator of the latter two missions. “We were all really scared when Voyager 1 stopped phoning home.”

It will be decades until another mission could accomplish what the Voyagers have done. NASA’s New Horizons soared by Pluto in 2015 and kept going ( SN:8/9/18 ). It’s heading toward the edge of the solar system, but it’s cruising slowly and will run out of power before it can collect data beyond the heliopause.

The Voyagers can fly forever, but power for their instruments is waning. Over the next few years, NASA will shut some down to conserve energy for the rest.

That means Voyager 1’s days of collecting science data are numbered. “It’s a very beloved mission,” Dodd says. “It’s humanity’s spacecraft, and we need to take care of it.”

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Nasa celebrates as 1977’s voyager 1 phones home at last.

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NASA’s Voyager 1 spacecraft is depicted in this artist’s concept traveling through interstellar ... [+] space, or the space between stars, which it entered in 2012.

Voyager 1 has finally returned usable data to NASA from outside the solar system after five months offline.

Launched in 1977 and now in its 46th year, the probe has been suffering from communication issues since November 14. The same thing also happened in 2022 . However, this week, NASA said that engineers were finally able to get usable data about the health and status of its onboard engineering systems.

Fixing Voyager 1 has been slow work. It’s currently over 15 billion miles (24 billion kilometers) from Earth, which means a radio message takes about 22.5 hours to reach it—and the same again to receive an answer.

The problem appears to have been its flight data subsystem, one of the spacecraft’s three onboard computers. Its job is to package the science and engineering data before it’s sent to Earth. Since the computer chip that stores its memory and some of its code is broken, engineers had to reinsert that code into a new location.

Next up for engineers at NASA’s Jet Propulsion Laboratory in California is to adjust other parts of the FDS software so Voyager 1 can resume sending science data.

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Apple iphone 16 unique all new design promised in new report, the world s best beers according to the 2024 world beer cup, beyond the ‘heliopause’.

The longest-running and most distant spacecraft in history, Voyager 1, was launched on September 5, 1977, while its twin spacecraft, Voyager 2, was launched a little earlier, on August 20, 1977. Voyager 2—now 12 billion miles away and traveling more slowly—continues to operate normally.

Both are now beyond what astronomers call the heliopause—a protective bubble of particles and magnetic fields created by the sun, which is thought to represent the sun’s farthest influence. Voyager 1 got to the heliopause in 2012 and Voyager 2 in 2018.

The Pale Blue Dot is a photograph of Earth taken Feb. 14, 1990, by NASA’s Voyager 1 at a distance of ... [+] 3.7 billion miles (6 billion kilometers) from the sun. The image inspired the title of scientist Carl Sagan's book, "Pale Blue Dot: A Vision of the Human Future in Space," in which he wrote: "Look again at that dot. That's here. That's home. That's us."

Pale Blue Dot

Since their launch from Cape Canaveral, Florida, aboard Titan-Centaur rockets, Voyager 1 and Voyager 2 have had glittering careers. Both photographed Jupiter and Saturn in 1979 and 1980 before going their separate ways. Voyager 1 could have visited Pluto, but that was sacrificed so scientists could get images of Saturn’s moon, Titan, a maneuver that made it impossible for it to reach any other body in the solar system. Meanwhile, Voyager 2 took slingshots around the planets to also image Uranus in 1986 and Neptune in 1989—the only spacecraft ever to image the two outer planets.

On February 14, 1990, when 3.7 billion miles from Earth, Voyager 1 turned its cameras back toward the sun and took an image that included our planet as “a mote of dust suspended in a sunbeam.” Known as the “Pale Blue Dot,” it’s one of the most famous photos ever taken. It was remastered in 2019 .

Wishing you clear skies and wide eyes.

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To learn more about Voyager, zoom in and give the spacecraft a spin. View the full interactive experience at Eyes on the Solar System . Credit: NASA/JPL-Caltech

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