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By NASA
This archival photo shows engineers working on NASA’s Voyager 2 spacecraft on March 23, 1977. NASA/JPL-Caltech NASA’s Voyager mission launched in the 1970s. Today, it’s making history as it conducts new science. But how are two spacecraft from the ’70s not just surviving, but thriving farther out in space than any other spacecraft has been before?
A Little Mission Background
Voyager is a NASA mission made up of two different spacecraft, Voyager 1 and 2, which launched to space on Sept. 5, 1977, and Aug. 20, 1977, respectively. In the decades following launch, the pair took a grand tour of our solar system, studying Jupiter, Saturn, Uranus, and Neptune — one of NASA’s earliest efforts to explore the secrets of the universe. These twin probes later became the first spacecraft to operate in interstellar space — space outside the heliosphere, the bubble of solar wind and magnetic fields emanating from the Sun. Voyager 1 was the first to enter interstellar space in 2012, followed by Voyager 2 in 2018.
Today, Voyager continues not just because it can, but because it still has work to do studying interstellar space, the heliosphere, and how the two interact. “We wouldn’t be doing Voyager if it wasn’t taking science data,” said Suzanne Dodd, the mission’s current project manager and the director for the Interplanetary Network at NASA’s Jet Propulsion Laboratory.
But across billions of miles and decades of groundbreaking scientific exploration, this trailblazing interstellar journey has not been without its trials. So, what’s the Voyager secret to success?
In short: preparation and creativity.
As NASA’s two Voyager spacecraft travel out into deep space, they carry a small American flag and a Golden Record packed with pictures and sounds — mementos of our home planet. This picture shows John Casani, Voyager project manager in 1977, holding a small Dacron flag that was folded and sewed into the thermal blankets of the Voyager spacecraft before they launched 36 years ago. Below him lie the Golden Record (left) and its cover (right). In the background stands Voyager 2 before it headed to the launch pad. The picture was taken at Cape Canaveral, Fla., on Aug. 4, 1977. NASA/JPL-Caltech We Designed Them Not to Fail
According to John Casani, Voyager project manager from 1975 to launch in 1977, “we didn’t design them to last 30 years or 40 years, we designed them not to fail.”
One key driver of the mission’s longevity is redundancy. Voyager’s components weren’t just engineered with care, they were also made in duplicate.
According to Dodd, Voyager “was designed with nearly everything redundant. Having two spacecraft — right there is a redundancy.”
“We didn’t design them to last 30 years or 40 years, we designed them not to fail.”
John Casani
Voyager Project Manager, 1975-1977
A Cutting-Edge Power Source
The twin Voyager spacecraft can also credit their longevity to their long-lasting power source.
Each spacecraft is equipped with three radioisotope thermoelectric generators. These nuclear “batteries” were developed originally by the U.S. Department of Energy as part of the Atoms for Peace program enacted by President Eisenhower in 1955. Compared to other power options at the time — like solar power, which doesn’t have the reach to work beyond Jupiter — these generators have allowed Voyager to go much farther into space.
Each of NASA’s Voyager probes are equipped with three radioisotope thermoelectric generators (RTGs), including the one shown here at NASA’s Kennedy Space Center in Florida. The RTGs provide power for the spacecraft by converting the heat generated by the decay of plutonium-238 into electricity. Launched in 1977, the Voyager mission is managed for NASA by the agency’s Jet Propulsion Laboratory, a division of Caltech in Pasadena, California.
NASA/JPL-Caltech Voyager’s generators continue to take the mission farther than any before, but they also continue to generate less power each year, with instruments needing to be shut off over time to conserve power.
Creative Solutions
As a mission that has operated at the farthest edges of the heliosphere and beyond, Voyager has endured its fair share of challenges. With the spacecraft now in interstellar space running on software and hardware from the 1970s, Voyager’s problems require creative solutions.
Retired mission personnel who worked on Voyager in its earliest days have even come back out of retirement to collaborate with new mission personnel to not just fix big problems but to pass on important mission know-how to the next generation of scientists and engineers.
“From where I sit as a project manager, it’s really very exciting to see young engineers be excited to work on Voyager. To take on the challenges of an old mission and to work side by side with some of the masters, the people that built the spacecraft,” Dodd said. “They want to learn from each other.”
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. Credit: NASA/JPL-Caltech NASA/JPL-Caltech Within just the last couple of years, Voyager has tested the mission team’s creativity with a number of complex issues. Most recently, the thrusters on Voyager 1’s thrusters, which control the spacecraft’s orientation and direction, became clogged. The thrusters allow the spacecraft to point their antennae and are critical to maintaining communications with Earth. Through careful coordination, the mission team was able to remotely switch the spacecraft to a different set of thrusters.
These kinds of repairs are extra challenging as a radio signal takes about 22 ½ hours to reach Voyager 1 from Earth and another 22 ½ hours to return. Signals to and from Voyager 2 take about 19 hours each way.
Voyager’s Interstellar Future
This brief peek behind the curtain highlights some of Voyager’s history and its secrets to success.
The Voyager probes may continue to operate into the late 2020s. As time goes on, continued operations will become more challenging as the mission’s power diminishes by 4 watts every year, and the two spacecraft will cool down as this power decreases. Additionally, unexpected anomalies could impact the mission’s functionality and longevity as they grow older.
As the mission presses on, the Voyager team grows this legacy of creative problem solving and collaboration while these twin interstellar travelers continue to expand our understanding of the vast and mysterious cosmos we inhabit.
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA has officially announced the 2025 Revolutionary Aerospace Systems Concepts – Academic Linkage (RASC-AL) competition.Credit: National Institute of Aerospace NASA has officially announced the 2025 Revolutionary Aerospace Systems Concepts – Academic Linkage (RASC-AL) competition, an initiative to fuel innovation for aerospace systems concepts, analogs, and technology prototyping through university engagement. RASC-AL, one of NASA’s longest-running student competitions, solicits concepts from the next generation of engineers and scientists to explore the future of deep space exploration.
RASC-AL is seeking proposals from the university community to develop new concepts that leverage innovation to improve our ability to operate on the Moon, Mars and beyond. This year’s themes range from developing large-scale lunar surface architectures enabling long-term, off-world habitation, to designing new systems that address objective characteristics and needs and leverage human-scale exploration infrastructure for new science paradigms.
Through RASC-AL, teams and their faculty advisors will design innovative solutions with supporting original engineering and analysis in response to one of the following four themes:
Sustained Lunar Evolution – An Inspirational Moment
Advanced Science Missions and Technology Demonstrators for Human-Mars Precursor Campaign
Small Lunar Servicing and Maintenance Robot
“The RASC-AL competition is a wellspring for groundbreaking ideas,” said Dan Mazanek, Assistant Branch Head for the Exploration Space Mission Analysis Branch (SMAB) at NASA’s Langley Research Center in Hampton, Virginia. “It fosters creativity and pushes the boundaries of what is possible in space exploration. We are looking for innovative solutions that can advance our capabilities beyond Earth’s orbit and pave the way for sustainable lunar exploration and beyond.”
Interested undergraduate and graduate university student teams and their faculty advisors should submit a Notice of Intent by October 16, 2024, and submit proposals and videos by February 24, 2025. Based on review of the team proposal and video submissions in March, up to 14 teams will be selected to advance to the final phase of the competition – presenting their concepts to a panel of NASA and industry judges in a competitive design review at the 2025 RASC-AL Forum in Cocoa Beach, Florida next June.
In addition to their research, teams are also highly encouraged to develop a prototype of part or all of their concept to demonstrate its key functions. Each finalist team will receive a $6,500 stipend to facilitate their full participation in the 2025 RASC-AL Competition, and the top two overall teams will be awarded with additional travel stipends to present their concept at an aerospace conference later in 2025.
Dr. Christopher Jones, Chief Technologist for the Systems Analysis and Concepts Directorate (SACD) at NASA Langley, emphasized RASC-AL’s distinctive fusion of educational value with real-world experience. “RASC-AL provides students with a unique opportunity to engage directly with NASA’s vision for space exploration. Participants not only gain hands-on experience in developing aerospace concepts but also contribute fresh perspectives that the Agency can take as inspiration for future missions and technologies.”
The call for proposals is now open, with proposal submissions due by February 24, 2025. Interested student teams are encouraged to visit the official RASC-AL competition website for detailed guidelines and eligibility requirements.
RASC-AL is sponsored by the Strategy and Architecture Office within the Exploration Systems Development Mission Directorate at NASA Headquarters, and by SMAB within SACD at NASA Langley. It is administered by the National Institute of Aerospace.
For more information about the RASC-AL competition, including eligibility, complete themes, and submission guidelines, visit: http://rascal.nianet.org
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By NASA
2 Min Read Exploring the Moon: Episode Previews
Extravehicular Activity and Human Surface Mobility Program Discover. Learn. Explore.
NASA’s video series, Exploring the Moon, takes a “behind-the-scenes” look at humanity’s next steps on the Moon. Here is your first look at some of the key moments from the upcoming series! Scroll down or navigate through CONTENTS, to the side, to explore!
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Who, What, When, Where, Why, and How…
How many small steps equal a giant leap? Find out what it takes to plan our next great voyage to the Moon, what exactly we plan to do there, and what may come next.
We went to the Moon fifty years ago, but we only explored a very small part of the Moon.
Nujoud Merancy
Exploration Systems Strategy & Architecture Lead
Going to the Moon Won’t Be Easy…
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Episode 01: Why Explore the Moon? Exploring the Moon Series Next-Generation Spacesuits
Explore the special technologies and improvements NASA has made to its spacesuits since the International Space Station (ISS), and how they will be used to make Artemis mission possible.
Basically you should think of a spacesuit as a human-shaped spacecraft.
Liana Rodriggs
Spacesuit Expert
Advancements in Mobility
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Episode 02: Artemis SpacesuitsExploring the Moon Series Spacesuits. How do they work?
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Episode 02: Artemis SpacesuitsExploring the Moon Series Spacewalks: Microgravity vs Planetary
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Episode 02: Artemis SpacesuitsExploring the Moon Series Lunar Rovers
Buckle up and roll out! Learn all about the different capabilities crewed and uncrewed rovers have. Plus, find out how these technologies will be used to explore the lunar surface.
We are taking the ability to transport crew and tools. And these rovers that can operate independent of the crew.
Nathan Howard
Lunar Rovers Expert
Reinventing the Wheel: Apollo to Artemis
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Episode 03: Lunar RoversExploring the Moon Series Simulating the Mission
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Episode 03: Lunar RoversExploring the Moon Series Lunar Geology Tools
How does NASA collect surface samples from the Moon? The answer may surprise you! Explore the challenges of designing the geology sampling equipment for the Artemis missions and how geology sampling technology has changed since Apollo missions.
In order to take these samples on the Moon you need something to pick these samples up with. You can't just walk around and pick them up by hand, that is why we make geology tools.
Holly Newton
Lunar Geology Tools Expert
Lessons Learned from Apollo
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Episode 04: Lunar Geology ToolsExploring the Moon Series Breakthrough! The Ingenuity of Artemis Tools
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Episode 04: Lunar Geology ToolsExploring the Moon Series It’s All In The Finer Details…
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Episode 04: Lunar Geology ToolsExploring the Moon Series Special Lunar Challenges
Learn how NASA engineers are working to prepare for the unique challenges astronauts will face when exploring the Lunar South Pole for the first time ever.
There are parts of the Moon and craters that have not seen the Sun in over a billion years.
Ben Greene
EVA Development Manager
The Challenges Ahead
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Episode 05: Special Lunar ChallengesExploring the Moon Series Dust. Gets. Everywhere.
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Episode 05: Special Lunar ChallengesExploring the Moon Series Exploring the South Pole of the Moon
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Episode 05: Special Lunar ChallengesExploring the Moon Series Back to the "Exploring the Moon" Main Page Keep Exploring Discover More Topics From NASA
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By NASA
Curiosity Navigation Curiosity Mission Overview Where is Curiosity? Mission Updates Science Overview Instruments Highlights Exploration Goals News and Features Multimedia Curiosity Raw Images Mars Resources Mars Missions Mars Sample Return Mars Perseverance Rover Mars Curiosity Rover MAVEN Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions All Planets Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto & Dwarf Planets 3 min read
Sols 4243-4245: Exploring Stubblefield Canyon
This image was taken by Left Navigation Camera onboard NASA’s Mars rover Curiosity on Sol 4241 (2024-07-11 20:34:05 UTC). Earth planning date: Friday, July 12, 2024
Curiosity, now heading uphill from the Mammoth Lakes drill site, has focused on a very interesting exposure of conglomerate rocks, consisting of pebbles cemented together by a fine-grained matrix material. On Earth, conglomerate rock is associated with downhill flows of rock and soil mixtures, often in a water-rich environment, so our science team is excited to find similar rocks on Mars.
The local exposure of this unusual Martian deposit has been named “Stubblefield Canyon,” honoring the headwaters of the stream forming Rancheria Falls, which tumbles into Yosemite National Park’s Hetch Hetchy reservoir. All targets in this area of Mount Sharp are named after geological features near the town of Bishop, California, which sits at the foot of the Sierra Nevada mountains in the Owens Valley of California. Curiosity’s last drive ended at a detached, rubbly conglomerate slab, dubbed “Wishbone Lake” after a Y-shaped lake in upper Lamarck Lake Canyon near Mono Lake. The image above shows the Wishbone Lake slab of conglomerate rock in the rover workspace. Over the weekend, the team will investigate this target and image the surrounding terrain, collecting evidence about the formation of conglomerate rocks on Mars.
On Wednesday, Curiosity successfully completed its MAHLI imaging of “Donohue Pass” and ChemCam laser spectroscopy of “Negit Island,” followed by a 3-meter drive (about 10 feet) to Wishbone Lake. During the current plan, APXS will analyze two pebbles within the Wishbone Lake slab, “Arrowhead Spire” and “Cattle Creek.” Arrowhead Spire honors a 100-foot vertical spike of granite near Yosemite Point, above Yosemite Valley. Cattle Creek is named for a stream that flows from a hanging valley into the Twin Lakes canyon near Bridgeport, California. MAHLI will image Cattle Creek, then do a 4×1 mosaic from a distance of 25 centimeters (about 10 inches) along the edges of Wishbone Lake, centered on the Arrowhead Spire pebble. ChemCam will take laser spectra of Arrowhead Spire, as well as the “Eocene Peak” matrix material target, named for an 11,500-foot peak in the Sawtooth Ridge along the northeastern boundary of Yosemite National Park.
Using its telescopic RMI camera, ChemCam will image upper Gediz Vallis Ridge and a distant ridgeline along our future drive path. Mastcam will photograph the ChemCam laser targets, as well as interesting portions of the Stubblefield Canyon conglomerate exposure, the Mammoth Lakes drill site as seen from our new location, and an interesting linear ridge. On sol 4244, Curiosity will drive 20 meters (about 66 feet) along our path toward “Fairview Dome,” followed by post-drive imaging and AEGIS observations. Atmospheric studies during the current plan include a Navcam dust devil movie and large dust devil survey, early morning Navcam zenith and suprahorizon cloud movies, Navcam deck imaging, Navcam and Mastcam dust opacity measurements, and a late afternoon Mastcam sky survey. Next week, we expect to explore Fairview Dome, then resume our climb up Mount Sharp.
Written by Deborah Padgett, Curiosity Operations Product Generation Subsystem Task Lead at NASA’s Jet Propulsion Laboratory
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Last Updated Jul 16, 2024 Related Terms
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By NASA
NASA is moving forward with ten studies to examine more affordable and faster methods of bringing samples from Mars’ surface back to Earth as part of the agency’s Mars Sample Return Program. As part of this effort, NASA will award a firm-fixed-price contract for up to $1.5 million to conduct 90-day studies to seven industry proposers.
Additionally, NASA centers, CalTech’s Jet Propulsion Laboratory, and Johns Hopkins’ Applied Physics Laboratory are producing studies. Once completed, NASA will assess all studies to consider alterations or enhancements to the Mars Sample Return architecture.
“Mars Sample Return will be one of the most complex missions NASA has undertaken, and it is critical that we carry it out more quickly, with less risk, and at a lower cost,” said Nelson. “I’m excited to see the vision that these companies, centers and partners present as we look for fresh, exciting, and innovative ideas to uncover great cosmic secrets from the Red Planet.”
Over the last quarter century, NASA has engaged in a systematic effort to determine the early history of Mars and how it can help us understand the formation and evolution of habitable worlds, including Earth. As part of that effort, Mars Sample Return has been a long-term goal of international planetary exploration for the past two decades. NASA’s Perseverance rover has been collecting samples for later collection and return to Earth since it landed on Mars in 2021.
The following companies and proposals were selected from among those that responded to an April 15 request for proposals:
Lockheed Martinin Littleton, Colorado: “Lockheed Martin Rapid Mission Design Studies for Mars Sample Return” SpaceX in Hawthorne, California: “Enabling Mars Sample Return With Starship” Aerojet Rocketdyne in Huntsville, Alabama: “A High-Performance Liquid Mars Ascent Vehicle, Using Highly Reliable and Mature Propulsion Technologies, to Improve Program Affordability and Schedule” Blue Origin in Monrovia, California: “Leveraging Artemis for Mars Sample Return” Quantum Space, in Rockville, Maryland: “Quantum Anchor Leg Mars Sample Return Study” Northrop Grumman in Elkton, Maryland: “High TRL MAV Propulsion Trades and Concept Design for MSR Rapid Mission Design” Whittinghill Aerospace in Camarillo, California: “A Rapid Design Study for the MSR Single Stage Mars Ascent Vehicle” NASA’s Mars Sample Return is a strategic partnership with ESA (the European Space Agency). Returning scientifically selected samples to Earth for study using the most sophisticated instruments around the world can revolutionize our understanding of Mars and would fulfill one of the highest priority solar system exploration goals as identified by the National Academies of Science, Engineering and Medicine.
For more information on Mars Sample Return, visit:
https://science.nasa.gov/mission/mars-sample-return/
-end-
Dewayne Washington
Headquarters, Washington
202-358-1600
dewayne.a.washington@nasa.gov
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Last Updated Jun 07, 2024 LocationNASA Headquarters View the full article
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