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By NASA
5 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Data from one of the two CubeSats that comprise NASA’s PREFIRE mission was used to make this data visualization showing brightness temperature — the intensity of infrared emissions — over Greenland. Red represents more intense emissions; blue indicates lower intensities. The data was captured in July.
NASA’s Scientific Visualization Studio The PREFIRE mission will help develop a more detailed understanding of how much heat the Arctic and Antarctica radiate into space and how this influences global climate.
NASA’s newest climate mission has started collecting data on the amount of heat in the form of far-infrared radiation that the Arctic and Antarctic environments emit to space. These measurements by the Polar Radiant Energy in the Far-Infrared Experiment (PREFIRE) are key to better predicting how climate change will affect Earth’s ice, seas, and weather — information that will help humanity better prepare for a changing world.
One of PREFIRE’s two shoebox-size cube satellites, or CubeSats, launched on May 25 from New Zealand, followed by its twin on June 5. The first CubeSat started sending back science data on July 1. The second CubeSat began collecting science data on July 25, and the mission will release the data after an issue with the GPS system on this CubeSat is resolved.
The PREFIRE mission will help researchers gain a clearer understanding of when and where the Arctic and Antarctica emit far-infrared radiation (wavelengths greater than 15 micrometers) to space. This includes how atmospheric water vapor and clouds influence the amount of heat that escapes Earth. Since clouds and water vapor can trap far-infrared radiation near Earth’s surface, they can increase global temperatures as part of a process known as the greenhouse effect. This is where gases in Earth’s atmosphere — such as carbon dioxide, methane, and water vapor — act as insulators, preventing heat emitted by the planet from escaping to space.
“We are constantly looking for new ways to observe the planet and fill in critical gaps in our knowledge. With CubeSats like PREFIRE, we are doing both,” said Karen St. Germain, director of the Earth Science Division at NASA Headquarters in Washington. “The mission, part of our competitively-selected Earth Venture program, is a great example of the innovative science we can achieve through collaboration with university and industry partners.”
Earth absorbs much of the Sun’s energy in the tropics; weather and ocean currents transport that heat toward the Arctic and Antarctica, which receive much less sunlight. The polar environment — including ice, snow, and clouds — emits a lot of that heat into space, much of which is in the form of far-infrared radiation. But those emissions have never been systematically measured, which is where PREFIRE comes in.
“It’s so exciting to see the data coming in,” said Tristan L’Ecuyer, PREFIRE’s principal investigator and a climate scientist at the University of Wisconsin, Madison. “With the addition of the far-infrared measurements from PREFIRE, we’re seeing for the first time the full energy spectrum that Earth radiates into space, which is critical to understanding climate change.”
This visualization of PREFIRE data (above) shows brightness temperatures — or the intensity of radiation emitted from Earth at several wavelengths, including the far-infrared. Yellow and red indicate more intense emissions originating from Earth’s surface, while blue and green represent lower emission intensities coinciding with colder areas on the surface or in the atmosphere.
The visualization starts by showing data on mid-infrared emissions (wavelengths between 4 to 15 micrometers) taken in early July during several polar orbits by the first CubeSat to launch. It then zooms in on two passes over Greenland. The orbital tracks expand vertically to show how far-infrared emissions vary through the atmosphere. The visualization ends by focusing on an area where the two passes intersect, showing how the intensity of far-infrared emissions changed over the nine hours between these two orbits.
The two PREFIRE CubeSats are in asynchronous, near-polar orbits, which means they pass over the same spots in the Arctic and Antarctic within hours of each other, collecting the same kind of data. This gives researchers a time series of measurements that they can use to study relatively short-lived phenomena like ice sheet melting or cloud formation and how they affect far-infrared emissions over time.
More About PREFIRE
The PREFIRE mission was jointly developed by NASA and the University of Wisconsin-Madison. A division of Caltech in Pasadena, California, NASA’s Jet Propulsion Laboratory manages the mission for NASA’s Science Mission Directorate and provided the spectrometers. Blue Canyon Technologies built and now operates the CubeSats, and the University of Wisconsin-Madison is processing and analyzing the data collected by the instruments.
To learn more about PREFIRE, visit:
https://science.nasa.gov/mission/prefire/
5 Things to Know About NASA’s Tiny Twin Polar Satellites Twin NASA Satellites Ready to Help Gauge Earth’s Energy Balance News Media Contacts
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Last Updated Sep 03, 2024 Related Terms
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By NASA
5 Min Read Webb Finds Early Galaxies Weren’t Too Big for Their Britches After All
This image shows a small portion of the field observed by NASA’s James Webb Space Telescope’s NIRCam (Near-Infrared Camera) for the Cosmic Evolution Early Release Science (CEERS) survey. The full image appears below. Credits:
NASA, ESA, CSA, S. Finkelstein (University of Texas) It got called the crisis in cosmology. But now astronomers can explain some surprising recent discoveries.
When astronomers got their first glimpses of galaxies in the early universe from NASA’s James Webb Space Telescope, they were expecting to find galactic pipsqueaks, but instead they found what appeared to be a bevy of Olympic bodybuilders. Some galaxies appeared to have grown so massive, so quickly, that simulations couldn’t account for them. Some researchers suggested this meant that something might be wrong with the theory that explains what the universe is made of and how it has evolved since the big bang, known as the standard model of cosmology.
According to a new study in the Astrophysical Journal led by University of Texas at Austin graduate student Katherine Chworowsky, some of those early galaxies are in fact much less massive than they first appeared. Black holes in some of these galaxies make them appear much brighter and bigger than they really are.
“We are still seeing more galaxies than predicted, although none of them are so massive that they ‘break’ the universe,” Chworowsky said.
The evidence was provided by Webb’s Cosmic Evolution Early Release Science (CEERS) Survey, led by Steven Finkelstein, a professor of astronomy at UT Austin and study co-author.
Image A : CEERS Deep Field (NIRCam)
This image shows a small portion of the field observed by NASA’s James Webb Space Telescope’s NIRCam (Near-Infrared Camera) for the Cosmic Evolution Early Release Science (CEERS) survey. It is filled with galaxies. Some galaxies appear to have grown so massive, so quickly, that simulations couldn’t account for them. However, a new study finds that some of those early galaxies are in fact much less massive than they first appeared. Black holes in some of those galaxies make them appear much brighter and bigger than they really are. NASA, ESA, CSA, S. Finkelstein (University of Texas)
View 8k pixel full resolution version of the image
Black Holes Add to Brightness
According to this latest study, the galaxies that appeared overly massive likely host black holes rapidly consuming gas. Friction in the fast-moving gas emits heat and light, making these galaxies much brighter than they would be if that light emanated just from stars. This extra light can make it appear that the galaxies contain many more stars, and hence are more massive, than we would otherwise estimate. When scientists remove these galaxies, dubbed “little red dots” (based on their red color and small size), from the analysis, the remaining early galaxies are not too massive to fit within predictions of the standard model.
“So, the bottom line is there is no crisis in terms of the standard model of cosmology,” Finkelstein said. “Any time you have a theory that has stood the test of time for so long, you have to have overwhelming evidence to really throw it out. And that’s simply not the case.”
Efficient Star Factories
Although they’ve settled the main dilemma, a less thorny problem remains: There are still roughly twice as many massive galaxies in Webb’s data of the early universe than expected from the standard model. One possible reason might be that stars formed more quickly in the early universe than they do today.
“Maybe in the early universe, galaxies were better at turning gas into stars,” Chworowsky said.
Star formation happens when hot gas cools enough to succumb to gravity and condense into one or more stars. But as the gas contracts, it heats up, generating outward pressure. In our region of the universe, the balance of these opposing forces tends to make the star formation process very slow. But perhaps, according to some theories, because the early universe was denser than today, it was harder to blow gas out during star formation, allowing the process to go faster.
More Evidence of Black Holes
Concurrently, astronomers have been analyzing the spectra of “little red dots” discovered with Webb, with researchers in both the CEERS team and others finding evidence of fast-moving hydrogen gas, a signature of black hole accretion disks. This supports the idea that at least some of the light coming from these compact, red objects comes from gas swirling around black holes, rather than stars – reinforcing Chworowsky and their team’s conclusion that they are probably not as massive as astronomers initially thought. However, further observations of these intriguing objects are incoming, and should help solve the puzzle about how much light comes from stars versus gas around black holes.
Often in science, when you answer one question, that leads to new questions. While Chworowsky and their colleagues have shown that the standard model of cosmology likely isn’t broken, their work points to the need for new ideas in star formation.
“And so there is still that sense of intrigue,” Chworowsky said. “Not everything is fully understood. That’s what makes doing this kind of science fun, because it’d be a terribly boring field if one paper figured everything out, or there were no more questions to answer.”The James Webb Space Telescope is the world’s premier space science observatory. Webb is solving mysteries in our solar system, looking beyond to distant worlds around other stars, and probing the mysterious structures and origins of our universe and our place in it. Webb is an international program led by NASA with its partners, ESA (European Space Agency) and CSA (Canadian Space Agency).
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Media Contacts
Laura Betz – laura.e.betz@nasa.gov, Rob Gutro – rob.gutro@nasa.gov
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Marc Airhart – mairhart@austin.utexas.edu
University of Texas at Austin
Christine Pulliam – cpulliam@stsci.edu
Space Telescope Science Institute, Baltimore, Md.
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Last Updated Aug 26, 2024 Editor Stephen Sabia Contact Laura Betz laura.e.betz@nasa.gov Related Terms
Astrophysics Galaxies Galaxies, Stars, & Black Holes Galaxies, Stars, & Black Holes Research Goddard Space Flight Center James Webb Space Telescope (JWST) Science & Research The Universe View the full article
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
By Jessica Barnett
From Earth, one might be tempted to view the Sun as a unique celestial object like no other, as it’s the star our home planet orbits and the one our planet relies on most for heat and light. But if you took a step back and compared the Sun to the other stars NASA has studied over the years, how would it compare? Would it still be so unique?
The Full-sun Ultraviolet Rocket SpecTrograph (FURST) aims to answer those questions when it launches aboard a Black Brant IX sounding rocket Aug. 11 at White Sands Missile Range in New Mexico.
“When we talk about ‘Sun as a star’, we’re treating it like any other star in the night sky as opposed to the unique object we rely on for human life. It’s so exciting to study the Sun from that vantage point,” said Adam Kobelski, institutional principal investigator for FURST and a research astrophysicist at NASA’s Marshall Space Flight Center in Huntsville, Alabama.
The Full-sun Ultraviolet Rocket SpecTrograph (FURST) undergoes testing at White Sands Missile Range in New Mexico in preparation for launch on Aug. 11. FURST will be launched aboard a Black Bryant IX sounding rocket and will observe the Sun in vacuum ultraviolet (VUV). The instrument was designed and built at Montana State University. NASA Marshall provided the camera, supplied avionics, and designed and built its calibration system. Credit: Montana State University FURST will obtain the first high-resolution spectra of the “Sun as a star” in vacuum ultraviolet (VUV), a light wavelength that is absorbed in Earth’s atmosphere meaning it can only be observed from space. Astronomers have studied other stars in the vacuum ultraviolet with orbiting telescopes, however these instruments are too sensitive to be pointed to the Sun. The recent advancements in high-resolution VUV spectroscopy now allow for the same observations of our own star, the Sun.
“These are wavelengths that Hubble Space Telescope is really great at observing, so there is a decent amount of Hubble observations of stars in ultraviolet wavelengths, but we don’t have comparable observations of our star in this wavelength range,” said Kobelski. Marshall was the lead field center for the design, development, and construction of the Hubble Space Telescope.
Because Hubble is too sensitive to point at Earth’s Sun, new instruments were needed to get a spectrum of the entire Sun that is of a similar quality to Hubble’s observations of other stars. Marshall built the camera, supplied avionics, and designed and built a new calibration system for the FURST mission. Montana State University (MSU), which leads the FURST mission in partnership with Marshall, built the optical system, which includes seven optics that will feed into the camera that will essentially create seven exposures, covering the entire ultraviolet wavelength range.
Charles Kankelborg, a heliophysics professor at MSU and principal investigator for FURST, described the mission as a very close collaboration with wide-ranging implications.
“Our mission will obtain the first far ultraviolent spectrum of the Sun as a star,” Kankelborg said. “This is a key piece of information that has been missing for decades. With it, we will place the Sun in context with other stars.”
Kobelski echoed the sentiment.
“How well do the observations and what we know about our Sun compare to our observations or what we know of other stars?” Kobelski said. “You’d expect that we know all this information about the Sun – it’s right there – but it turns out, we actually don’t. If we can get these same observations or same wavelengths as we’ve observed from these other sources, we can start to connect the dots and connect our Sun to other stars.”
Montana State University alumnus Jake Davis, left, Professor Charles Kankelborg, and doctoral students Catharine “Cappy” Bunn and Suman Panda, pose at White Sands Missile Range in New Mexico, where they are preparing for the launch of the FURST rocket mission to observe the sun in far ultraviolet.Credit: Montana State University FURST will be the third launch led by Marshall for NASA’s Sounding Rocket Program within five months, making 2024 an active year for the program. Like the Hi-C Flare mission that launched in April, the sounding rocket will launch and open during flight to allow FURST to observe the Sun for approximately five minutes before closing and falling back to Earth’s surface. Marshall team members will be able to calibrate the instruments during launch and flight, as well as retrieve data during flight and soon after landing.
Kobelski and Kankelborg each said they’re grateful for the opportunity to fill the gaps in our knowledge of Earth’s Sun.
The launch will be livestreamed on Sunday, Aug. 11, with a launch window of 11:40 a.m.– 12:40 p.m. CDT. Tune in on NASA’s White Sands Test Facility Launch Channel.
The FURST mission is led by Marshall in partnership with Montana State University in Bozeman, Montana, with additional support from the NASA’s Sounding Rockets Office and the U.S. National Center for Atmospheric Research’s High Altitude Observatory. Launch support is provided at White Sands Missile Range in New Mexico by NASA’s Johnson Space Center. NASA’s Sounding Rocket Program is managed by the agency’s Heliophysics Division.
Lane Figueroa
Marshall Space Flight Center, Huntsville, Ala.
256.544.0034
lane.e.figueroa@nasa.gov
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Last Updated Aug 09, 2024 EditorBeth RidgewayLocationMarshall Space Flight Center Related Terms
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By NASA
A college team dressed in protective clean room suits prepares their robotic rover to compete in the final round of NASA’s annual Lunabotics competition on Thursday, May 16, 2024. Teams score points when their rover completes challenging tasks inside the Artemis Arena – a simulated lunar landscape inside The Astronauts Memorial Foundation’s Center for Space Education at the Kennedy Space Center Visitor Complex in Florida. (Credit: NASA) NASA invites teams from colleges, universities, as well as technical and vocational schools around the country to test their engineering skills in the 2025 Lunabotics Challenge. Applications open at 5 p.m. EDT on Friday, Sept. 6. The competition is aimed at inspiring Artemis Generation students to explore science, technology, engineering, and math (STEM) for the benefit of humanity.
Managed by NASA’s Office of STEM Engagement, the Lunabotics Challenge asks teams to design and build an autonomous or telerobotic robot capable of navigating a simulated lunar surface and completing the assigned construction task. The robots will have to master the complexities of regolith, or lunar soil, simulants used to excavate and construct berm structures in a lunar environment, be capable of operating by remote control or through autonomous operations, and account for weight and size limitations.
By participating in one of NASA’s Artemis Student Challenges, students have the opportunity to provide data on robotic excavator and builder design and operations, helping shape future missions at the Moon and ultimately Mars. NASA encourages creative construction techniques and evaluates student designs and data just like it does for its own prototypes, increasing the chances of finding smart solutions for the challenges the agency may encounter at the Moon under the Artemis campaign.
Additionally, the competition will educate college students in the NASA systems engineering process, the agency’s methodical, multi-disciplinary approach for the design, realization, technical management, operations, and retirement of a system.
The competition will close on Thursday, Sept. 12, and NASA will announce selected teams on Friday, Sept. 20. These teams will put their robots to the test during the University of Central Florida’s Lunabotics Qualification Challenge in May 2025, with the highest scoring teams invited to the culminating event at NASA’s Kennedy Space Center in Florida later that month.
Lunabotics takes place annually, running since 2010, and is one of several Artemis Student Challenges reflecting the goals of the Artemis campaign, which seeks to land the first woman, first person of color, and first international astronaut on the Moon where NASA will establish a long-term presence and prepare for future science and exploration of Mars.
More than 7,000 students have participated in Lunabotics with many former students now working at NASA, or within the aerospace industry.
To learn more about LUNABOTICS, visit:
https://go.nasa.gov/4dcsjVg
–end–
Abbey Donaldson
Headquarters, Washington
202-358-1600
abbey.a.donaldson@nasa.gov
Derrol Nail
Kennedy Space Center, Florida
321-289-9513
derrol.j.nail@nasa.gov
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By NASA
NASA’s SpaceX Crew-10 members (pictured from left to right) NASA astronaut Nichole Ayers, Roscosmos cosmonaut Kirill Peskov, NASA astronaut Anne McClain, and JAXA (Japan Aerospace Exploration Agency) astronaut Takuya OnishiCredit: NASA As part of NASA’s SpaceX Crew-10 mission, four crew members are preparing to launch for a long-duration stay aboard the International Space Station.
NASA astronauts Commander Anne McClain and Pilot Nichole Ayers, JAXA (Japan Aerospace Exploration Agency) astronaut Mission Specialist Takuya Onishi, and Roscosmos cosmonaut Mission Specialist Kirill Peskov will join astronauts at the orbiting laboratory no earlier than February 2025.
The flight is the 10th crew rotation with SpaceX to the station as part of NASA’s Commercial Crew Program. While aboard, the international crew will conduct scientific investigations and technology demonstrations to help prepare humans for future missions and benefit people on Earth.
Selected by NASA as an astronaut in 2013, this will be McClain’s second spaceflight. A colonel in the U.S. Army, she earned her bachelor’s degree in Mechanical Engineering from the U.S. Military Academy at West Point, New York, and holds master’s degrees in Aerospace Engineering, International Security, and Strategic Studies. The Spokane, Washington, native was an instructor pilot in the OH-58D Kiowa Warrior helicopter and is a graduate of the U.S. Naval Test Pilot School in Patuxent River, Maryland. McClain has more than 2,300 flight hours in 24 rotary and fixed-wing aircraft, including more than 800 in combat, and was a member of the U.S. Women’s National Rugby Team. On her first spaceflight, McClain spent 204 days as a flight engineer during Expeditions 58 and 59 and was the lead on two spacewalks, totaling 13 hours and 8 minutes. Since then, she has served in various roles, including branch chief and space station assistant to the chief of NASA’s Astronaut Office.
Ayers is a major in the U.S. Air Force and the first member of NASA’s 2021 astronaut class named to a crew. The Colorado native graduated from the Air Force Academy in Colorado Springs with a bachelor’s degree in Mathematics and a minor in Russian, where she was a member of the academy’s varsity volleyball team. She later earned a master’s in Computational and Applied Mathematics from Rice University in Houston. Ayers served as an instructor pilot and mission commander in the T-38 ADAIR and F-22 Raptor, leading multinational and multiservice missions worldwide. She has more than 1,400 total flight hours, including more than 200 in combat.
With 113 days in space, this mission also will mark Onishi’s second trip to the space station. After being selected by JAXA in 2009, he flew as a flight engineer for Expeditions 48 and 49 became the first Japanese astronaut to robotically capture the Cygnus spacecraft. He also constructed a new experimental environment aboard Kibo, the station’s Japanese experiment module. Since his spaceflight, Onishi became certified as a JAXA flight director, leading the team responsible for operating Kibo from JAXA Mission Control in Tsukuba, Japan. He holds a bachelor’s degree in Aeronautics and Astronautics from the University of Tokyo and was a pilot for All Nippon Airways, flying more than 3,700 flight hours in the Boeing 767.
NASA’s SpaceX Crew-10 mission also will be Peskov’s first spaceflight. Before his selection as a cosmonaut in 2018, he earned a degree in Engineering from the Ulyanovsk Civil Aviation School and was a co-pilot on the Boeing 757 and 767 aircraft for airlines Nordwind and Ikar. Assigned as a test-cosmonaut in 2020, he has additional experience in skydiving, zero-gravity training, scuba diving, and wilderness survival.
For more than two decades, people have lived and worked continuously aboard the International Space Station, advancing scientific knowledge and demonstrating new technologies, making research breakthroughs not possible on Earth. The station is a critical testbed for NASA to understand and overcome the challenges of long-duration spaceflight and to expand commercial opportunities in low Earth orbit. As commercial companies focus on providing human space transportation services and destinations as part of a robust low Earth orbit economy, NASA’s Artemis campaign is underway at the Moon, where the agency is preparing for future human exploration of Mars.
Find more information on NASA’s Commercial Crew Program at:
https://www.nasa.gov/commercialcrew
-end-
Joshua Finch / Claire O’Shea
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov / claire.a.o’shea@nasa.gov
Raegan Scharfetter
Johnson Space Center, Houston
281-910-4989
raegan.r.scharfetter@nasa.gov
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Last Updated Aug 01, 2024 EditorJessica TaveauLocationNASA Headquarters Related Terms
Commercial Crew Anne C. McClain Astronauts Humans in Space International Space Station (ISS) ISS Research Nichole Ayers View the full article
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