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By Space Force
At this week's annual Air, Space and Cyber Conference, the command responsible for training and readiness in the Space Force emphasized Guardian development, connection and family readiness across three key panel discussions.
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By European Space Agency
Just a month after its launch, ESA’s Arctic Weather Satellite has already delivered its first images, notably capturing Storm Boris, which has been wreaking havoc across central Europe.
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By NASA
5 Min Read Reinventing the Clock: NASA’s New Tech for Space Timekeeping
The Optical Atomic Strontium Ion Clock is a higher-precision atomic clock that is small enough to fit on a spacecraft. Credits: NASA/Matthew Kaufman Here on Earth, it might not matter if your wristwatch runs a few seconds slow. But crucial spacecraft functions need accuracy down to one billionth of a second or less. Navigating with GPS, for example, relies on precise timing signals from satellites to pinpoint locations. Three teams at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, are at work to push timekeeping for space exploration to new levels of precision.
One team develops highly precise quantum clock synchronization techniques to aid essential spacecraft communication and navigation. Another Goddard team is working to employ the technique of clock synchronization in space-based platforms to enable telescopes to function as one enormous observatory. The third team is developing an atomic clock for spacecraft based on strontium, a metallic chemical element, to enable scientific observations not possible with current technology. The need for increasingly accurate timekeeping is why these teams at NASA Goddard, supported by the center’s Internal Research and Development program, hone clock precision and synchronization with innovative technologies like quantum and optical communications.
Syncing Up Across the Solar System
“Society requires clock synchronization for many crucial functions like power grid management, stock market openings, financial transactions, and much more,” said Alejandro Rodriguez Perez, a NASA Goddard researcher. “NASA uses clock synchronization to determine the position of spacecraft and set navigation parameters.”
If you line up two clocks and sync them together, you might expect that they will tick at the same rate forever. In reality, the more time passes, the more out of sync the clocks become, especially if those clocks are on spacecraft traveling at tens of thousands of miles per hour. Rodriguez Perez seeks to develop a new way of precisely synchronizing such clocks and keeping them synced using quantum technology.
Work on the quantum clock synchronization protocol takes place in this lab at NASA’s Goddard Space Flight Center in Greenbelt, Md.NASA/Matthew Kaufman In quantum physics, two particles are entangled when they behave like a single object and occupy two states at once. For clocks, applying quantum protocols to entangled photons could allow for a precise and secure way to sync clocks across long distances.
The heart of the synchronization protocol is called spontaneous parametric down conversion, which is when one photon breaks apart and two new photons form. Two detectors will each analyze when the new photons appear, and the devices will apply mathematical functions to determine the offset in time between the two photons, thus synchronizing the clocks.
While clock synchronization is currently done using GPS, this protocol could make it possible to precisely synchronize clocks in places where GPS access is limited, like the Moon or deep space.
Syncing Clocks, Linking Telescopes to See More than Ever Before
When it comes to astronomy, the usual rule of thumb is the bigger the telescope, the better its imagery.
“If we could hypothetically have a telescope as big as Earth, we would have incredibly high-resolution images of space, but that’s obviously not practical,” said Guan Yang, an optical physicist at NASA Goddard. “What we can do, however, is have multiple telescopes in various locations and have each telescope record the signal with high time precision. Then we can stich their observations together and produce an ultra-high-res image.”
The idea of linking together the observations of a network of smaller telescopes to affect the power of a larger one is called very long baseline interferometry, or VLBI.
For VLBI to produce a whole greater than the sum of its parts, the telescopes need high-precision clocks. The telescopes record data alongside timestamps of when the data was recorded. High-powered computers assemble all the data together into one complete observation with greater detail than any one of the telescopes could achieve on its own. This technique is what allowed the Event Horizon Telescope’s network of observatories to produce the first image of a black hole at the center of our galaxy.
The Event Horizon Telescope (EHT) — a planet-scale array of eight ground-based radio telescopes forged through international collaboration — was designed to capture images of a black hole. Although the telescopes making up the EHT are not physically connected, they are able to synchronize their recorded data with atomic clocks.EHT Collaboration Yang’s team is developing a clock technology that could be useful for missions looking to take the technique from Earth into space which could unlock many more discoveries.
An Optical Atomic Clock Built for Space Travel
Spacecraft navigation systems currently rely on onboard atomic clocks to obtain the most accurate time possible. Holly Leopardi, a physicist at NASA Goddard, is researching optical atomic clocks, a more precise type of atomic clock.
While optical atomic clocks exist in laboratory settings, Leopardi and her team seek to develop a spacecraft-ready version that will provide more precision.
The team works on OASIC, which stands for Optical Atomic Strontium Ion Clock. While current spacecraft utilize microwave frequencies, OASIC uses optical frequencies.
The Optical Atomic Strontium Ion Clock is a higher-precision atomic clock that is small enough to fit on a spacecraft.NASA/Matthew Kaufman “Optical frequencies oscillate much faster than microwave frequencies, so we can have a much finer resolution of counts and more precise timekeeping,” Leopardi said.
The OASIC technology is about 100 times more precise than the previous state-of-the-art in spacecraft atomic clocks. The enhanced accuracy could enable new types of science that were not previously possible.
“When you use these ultra-high precision clocks, you can start looking at the fundamental physics changes that occur in space,” Leopardi said, “and that can help us better understand the mechanisms of our universe.”
The timekeeping technologies unlocked by these teams, could enable new discoveries in our solar system and beyond.
More on cutting-edge technology development at NASA Goddard By Matthew Kaufman, with additional contributions from Avery Truman
NASA’s Goddard Space Flight Center, Greenbelt, Md.
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Last Updated Sep 18, 2024 EditorRob GarnerContactRob Garnerrob.garner@nasa.govLocationGoddard Space Flight Center Related Terms
Goddard Technology Communicating and Navigating with Missions Goddard Space Flight Center Technology View the full article
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By NASA
Earth Observer Earth Home Earth Observer Home Editor’s Corner Feature Articles Meeting Summaries News Science in the News Calendars In Memoriam More Archives 4 min read
Celebrating the First Earth Day Event at NASA Headquarters
Photo. Young attendees pose in front of the NASA Worm at the Earth Day celebration at NASA HQ. Photo credit: NASA Introduction
Organized by the Science Mission Directorate’s Science Support Office (SSO), NASA hosted its 12th annual Earth Day Celebration event from April 18–19, 2024. For the first time ever, the two-day event was held at NASA Headquarters (HQ) in Washington, DC.
The in-person event, which was free and open to the public, featured the newly installed Earth Information Center (EIC) exhibit – see Photos 1–4. The event featured 17 hands-on activities offered in NASA HQ’s East Lobby as well as two adjacent outdoor tents. Event participants were given an activity passport called the “Passport to Fun” listing all the activities and encouraging attendees to visit the stations and interact with NASA staff – see Figure 1. After completing six or more activities, attendees were able to claim giveaway items, e.g., lenticulars, NASA bags, posters, and calendars.
Photos 1–3. Student attendees at the Earth Information Center (EIC) interactive exhibit. Photo credits: NASA Photos 1–3. Student attendees at the Earth Information Center (EIC) interactive exhibit. Photo credits: NASA Photos 1–3. Student attendees at the Earth Information Center (EIC) interactive exhibit. Photo credits: NASA
Photo 4. Mark Subbarao [GSFC—Scientific Visualization Studio Lead] engages attendees with NASA science in front of the EIC Hyperwall. Photo credit: NASA Figure 1. Earth Day Activity Passport. Figure credit: NASA Prior to the event, Trena Ferrell [GSFC—Earth Science Education and Public Outreach Lead] arranged for groups of students from several local schools to visit the NASA Earth Day event. This included over 300 students from DuVal High School, Morgan State University, Howard University, Prince George’s County Environmental Academy, Prince George’s County Virtual Academy, International Hispanic School, and homeschoolers. On April 19, all of the students who were present at that time gathered for a plenary in the Webb Auditorium. Ferrell welcomed the attendees and provided introductions to prepare them for a virtual presentation by former NASA astronaut Paul Richards, who interacted with attendees and answered questions for roughly 20 minutes.
After Richard’s presentation, the attendees heard from Karen St. Germain [NASA HQ—Director of NASA’s Earth Science Division], whose in-person remarks emphasized to the students the crucial albeit less publicized studies that NASA does of our home planet. Related to this year’s Earth Day theme, “Water Touches Everything,” she discussed the ability of NASA’s Earth observing satellites to track water in all its forms as it circulates throughout the Earth system. St. Germain then answered questions from the audience for 15 minutes – see Photos 5–8.
Photo 5.Trena Ferrell [GSFC—Earth Science Education and Public Outreach Lead] welcomed student attendees to the Earth Day event. Photo credit: NASA Photos 6–7. Former NASA astronaut Paul Richards takes audience questions at the NASA Earth Day event. Photo credit: NASA Photos 6–7. Former NASA astronaut Paul Richards takes audience questions at the NASA Earth Day event. Photo credit: NASA Photo 8. Karen St. Germain [NASA Headquarters—Director of NASA’s Earth Science Division] provided remarks and answered student questions in the Webb Auditorium. Photo credit: NASA
NASA Administrator Bill Nelson visited the event on April 19, accompanied by Karen St. Germain and several NASA staff members who guided him as he explored the activities offered – see Photos 9–10.
Photo 9. NASA Administrator Bill Nelson [center, rear] spent time circulating among the NASA Earth Day hands-on activities. Here, he visits the “Measuring Light the Landsat Way” activity station, where Mike Taylor [GSFC/Science Systems and Applications, Inc.—Landsat Outreach Team] [left] explains how Landsat utilizes the electromagnetic spectrum and spectral signatures to better understand Earth. Photo credit: NASA Photo 10. [Left to right] Faith McKie [Acting NASA Press Secretary], Bill Nelson, Karen St. Germain, and Tom Wagner [Associate Director for Earth Action in the Earth Science Division of NASA’s Science Mission Directorate] during the Earth Day media briefing. Photo credit: NASA
Throughout the two-day event, it is estimated that as many as 1500 public participants attended along with the 300 students already discussed. While SSO staff distributed 500 activity passports, many small groups and families shared a single passport. SSO staff estimates that the true number of participants may be close to 1500 – see Photos 11–19.
Photo 11. A young Earth Day participant interacts with Ellen Gray [NASA GSFC—Earth Science News Team]. Photo credit: NASA Photo 12. Jenny Mottar [NASA HQ—Art Director for the Science Mission Directorate] and Kevin Miller [GSFC—SSO Senior Graphic Designer] hand out “Water Touches Everything” NASA Earth Day posters to student attendees. Photo credit: NASA Photos 13. Ross Walter [GSFC—Data Visualizer and Animator, Landsat Outreach Team] engages with students at the “Viewing Earth From Above with Landsat” station. Photo credit: NASA Photos 14. Students explore the Chesapeake Bay as seen by Landsat 8 with a large, vinyl floor mat. Photo credit: NASA Photo 15. Students play a Global Ecosystem Dynamics Investigation (GEDI) Jeopardy game at the “GEDI Knights Measure Forests from Space” table. Photo credit: NASA Photo 16. Student attendees make ultraviolet-bead bracelets and Helio Big Year buttons at the Heliophysics station. Photo credit: NASA Photo 17. Young attendees engage with Valerie Casasanto [GSFC—Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) Outreach Lead], who helps them work on a three-dimensional glacier puzzle at the “ICESat-2: Ice, Trees, and Earth Height, If You Please!” station. Photo credit: NASA Photo 18. Young attendees engage with the “Meteorite Map Challenge.” Photo credit: NASA Photo 19. Dorian Janney [GSFC—GPM Outreach Specialist] engages visitors at the “Connect the Drops” station, where visitors learn how and why measuring global precipitation helps us better understand our home planet. Photo credit: NASA
Conclusion
NASA’s first Earth Day Celebration at NASA Headquarters was quite successful. While attendance was lower than previous events held at the more heavily trafficked Union Station or the National Mall, there was a steady stream of people throughout the exhibit on both days. It was also a great opportunity to showcase the new EIC to the public. Earth Day is the largest event organized annually by the SSO. This event requires months of planning, cross-divisional coordination, and intensive design of the hands-on activities – all carried from conceptualization through numerous revisions to implementation by more than 100 individuals from across the agency. This combined effort of SSO staff and assisting organizations results in an event that brings together thousands of visitors from a broad spectrum of ages and backgrounds to enjoy NASA science. This event would not have been possible were it not for the incredible efforts and collaboration put forth by so many of NASA’s outreach professionals. The SSO is grateful for all who helped to make this year’s Earth Day event a success and looks forward to Earth Day 2025.
Dalia Kirshenblat
NASA’s Goddard Space Flight Center/Global Science & Technology, Inc. (GSFC/GST)
dalia.p.zelmankirshenblat@nasa.gov
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Last Updated Sep 17, 2024 Related Terms
Earth Science View the full article
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By NASA
News Chief Rob Garner shares NASA Goddard’s story with the public, supporting writers and creators in the Office of Communications.
Name: Rob Garner
Title: News Chief
Formal Job Classification: Senior public affairs specialist
Organization: Office of Communications (Code 130)
Rob Garner has worked in the Office of Communications at NASA’s Goddard Space Flight Center in Greenbelt, Md., since 2007.NASA/Jamie Adkins What do you do and what is most interesting about your role here at Goddard?
I am responsible for helping take the great work going on at our center and sharing it with as many people as we can. My job is sort of like being an editor in chief. I try to set the tone for our storytelling and manage our publication schedule. Mostly I try to give our writers and other communicators the support they need to do their jobs — and then I try to get out of their way so they can do what they do best.
What is your educational background?
I have a B.A. in journalism from the University of Maryland, College Park, with a minor in astronomy, as well as a Master of Library Science degree focusing on archives, also from UMD.
Why did you want to be a journalist?
I sort of fell into the work that I am doing. In high school, I thought I would be a band director. I realized very quickly after high school that my enthusiasm for music did not align with my proficiency in it. Music remains an important hobby, but I needed to make a living doing something else.
I did not really enjoy writing until I got to college and had the opportunity to experience journalism. Tight writing, going straight to the source to get answers, accurate researching, it all appealed to me. I think journalism as a profession plays a critical role in ensuring an informed and functional society.
How did you come to work for Goddard?
After I graduated college, I worked weekends for a few months on the digital desk at WTOP radio, editing copy and updating their website. I was still looking for a fulltime gig, and I happened upon a newspaper classified for a position at Goddard. It called for a little bit of newswriting, a little bit of web editing, a little bit of science. Until that moment, I never imagined NASA could have a place for someone like me.
Goddard offered me a one-year fellowship in the Office of Communication (back then called Public Affairs) to do website editing for our Earth science team. The fellowship was renewed a few times, and eventually I became a general web editor, then also a social media editor, and eventually leader of the digital media team. In 2022, I became the news chief.
As news chief, what is your vision?
I take very seriously the part of NASA’s 1958 charter that charges the agency not just with conducting cutting-edge research, but also with sharing our work with the broadest possible audience. We must also drive home why what we do matters. The first thing I look for when reviewing copy is how well the piece addresses the “why.”
What makes a good science communicator?
Goddard has some 10,000 people, mostly researchers and engineers. Here, a successful science communicator is one who develops relationships among these different people and a deep understanding of their many projects. As communicators, we cannot do our jobs if we do not also have the trust of the people actually doing the science.
As a mentor, what is the one big piece of advice you give?
I tell our interns to jump in with both feet. So much of what we do and what we know cannot be found in any handbook or manual. So much of it is the institutional knowledge that each of us carries based on our own experiences.
Grab hold of the people who have the experience and take in as much as you can from them. Immersing in and embracing that Goddard culture is what will set apart a good colleague from a great one.
Everyone in the newsroom here knows that you are quite fond of the Associated Press (AP) Stylebook and the NASA Stylebook and Communications Manual. Can you please explain what they and why you are so fond of them?
One can think of AP style as an appendix or addendum to the dictionary, and the NASA style manual as an appendix or addendum to AP. The aim in having all of these mechanics standardized is to make it easier for the reader to read what you are writing. Even if one doesn’t know the rules governing serial comma usage, most of us can tell when what we’re reading is sloppy. Any time you force the reader to pause and review, there is a chance you will lose them. They may tune out and take their attention elsewhere.
These manuals lay out more than the mechanics of which states get abbreviated in what way, when to use semicolons, and when to use em dashes. They also give us guidelines about how to do our jobs, covering things like ethics, chain of command, and conflict resolution.
What do you enjoy best about your job?
My job is not just editing copy, fielding questions from reporters, or escorting groups for tours or documentary filming. I do enjoy all of that, but what I like most is that every day is different, and every day I learn something new. I love the variety of tasks and tactics that we use get our message out to the world. NASA plays a critical role in benefitting all of humanity by broadening our knowledge about the universe and our place in it. It’s personally very meaningful to me to have even a small role in that mission. And I enjoy working with a really great group of people.
You said in high school you thought you would become a band director. Have you kept up with playing?
In my free time, I do still play trumpet. For almost 20 years, I have played in community orchestras that draw repertoire from video game soundtracks. The past 10 years, I’ve been with the Washington Metropolitan Gamer Symphony Orchestra (WMGSO), along with my wife, who plays the violin. This group — well over 100 of us — originated when we were all in college, and we have continued together since then. What makes our group special is that we still do a lot of the orchestration ourselves, meaning that you cannot hear our music anywhere else. We meet once a week and perform three or four times a year throughout the D.C. area. We even have an album out, with another on the way soon.
Can you please tell us about your dog rescue volunteer work?
Since 2018, my wife and I have been involved with a couple area animal rescues. We typically take in newly weaned puppies and keep them for the weeks or months it takes for them to find their forever homes. While they are in our care, we keep them safe, fed, warm, and loved. We also socialize them as much as possible. The organizations take care of finding them homes through weekly adoption events.
My wife and I have three dogs of our own, two of which are rescues from this group. We have fostered hundreds over the years. I lost count somewhere north of 250 — and counting. I think it is important for everyone to find a way to make the world a better place. This is our way of doing that.
Garner and then-Goddard News Chief Ed Campion celebrating the latter’s retirement in 2018. Aloha shirt Fridays were a mainstay of Campion’s tenure.NASA/Bill Hrybyk Who would you like to thank for helping you?
That’s a long list! I’m forever grateful to Goddard’s executive producer, Wade Sisler, who saw something in babyface Rob Garner, nearly fresh out of school, and gave me a chance at a toehold in NASA.
I definitely want to thank Ed Campion, our retired former news chief and “minister of truth,” for all he did for me. When I first got to Goddard in 2007, Ed was one of the first people to take me under his wing and teach me about Goddard and NASA culture. Ed came through the agency during some very hard times, both shuttle accidents, and some very important highs, like the successful Hubble telescope repair missions. He worked at NASA Headquarters in Washington and also at Johnson Space Center in Houston. I learned a lot about how to do this job, and how to treat your teammates, from him.
I also want to thank my wife Katie. She’s challenged me and encouraged me to grow into a better person. Raising a family together has been a wild ride, and it’s only just getting started.
What is your “six-word memoir”? A six-word memoir describes something in just six words.
“Omit needless words. Assume positive intent.”
The first half was the rule hammered into us in journalism school. The second half is the mantra I learned from Michelle Jones, former head of Goddard communications, about treating others with kindness and compassion. Michelle — now the deputy associate administrator for communications at NASA — is another mentor I could never thank enough for helping me get where I am.
By Elizabeth M. Jarrell
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Conversations With Goddard is a collection of Q&A profiles highlighting the breadth and depth of NASA’s Goddard Space Flight Center’s talented and diverse workforce. The Conversations have been published twice a month on average since May 2011. Read past editions on Goddard’s “Our People” webpage.
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Last Updated Sep 16, 2024 EditorMadison OlsonContactJamie Adkinsjamie.l.adkins@nasa.govLocationGoddard Space Flight Center Related Terms
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