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The Universe "Down Under" is the Latest Target for Hubble's Latest Deep-View
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By NASA
Did you know some of the brightest sources of light in the sky come from the regions around black holes in the centers of galaxies? It sounds a little contradictory, but it’s true! They may not look bright to our eyes, but satellites have spotted oodles of them across the universe.
One of those satellites is NASA’s Fermi Gamma-ray Space Telescope. Fermi has found thousands of these kinds of galaxies since it launched in 2008, and there are many more out there!
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Watch a cosmic gamma-ray fireworks show in this animation using just a year of data from the Large Area Telescope (LAT) aboard NASA’s Fermi Gamma-ray Space Telescope. Each object’s magenta circle grows as it brightens and shrinks as it dims. The yellow circle represents the Sun following its apparent annual path across the sky. The animation shows a subset of the LAT gamma-ray records available for more than 1,500 objects in a continually updated repository. Over 90% of these sources are a type of galaxy called a blazar, powered by the activity of a supermassive black hole. NASA’s Marshall Space Flight Center/Daniel Kocevski Black holes are regions of space that have so much gravity that nothing — not light, not particles, nada — can escape. Most galaxies have supermassive black holes at their centers, and these black holes are hundreds of thousands to billions of times the mass of our Sun. In active galactic nuclei (also called “AGN” for short, or just “active galaxies”) the central region is stuffed with gas and dust that’s constantly falling toward the black hole. As the gas and dust fall, they start to spin and form a disk. Because of the friction and other forces at work, the spinning disk starts to heat up.
This composite view of the active galaxy Markarian 573 combines X-ray data (blue) from NASA’s Chandra X-ray Observatory and radio observations (purple) from the Karl G. Jansky Very Large Array in New Mexico with a visible light image (gold) from the Hubble Space Telescope. Markarian 573 is an active galaxy that has two cones of emission streaming away from the supermassive black hole at its center. X-ray: NASA/CXC/SAO/A.Paggi et al; Optical: NASA/STScI; Radio: NSF/NRAO/VLA The disk’s heat gets emitted as light, but not just wavelengths of it that we can see with our eyes. We detect light from AGN across the entire electromagnetic spectrum, from the more familiar radio and optical waves through to the more exotic X-rays and gamma rays, which we need special telescopes to spot.
In the heart of an active galaxy, matter falling toward a supermassive black hole creates jets of particles traveling near the speed of light as shown in this artist’s concept. NASA/Goddard Space Flight Center Conceptual Image Lab About one in 10 AGN beam out jets of energetic particles, which are traveling almost as fast as light. Scientists are studying these jets to try to understand how black holes — which pull everything in with their huge amounts of gravity — somehow provide the energy needed to propel the particles in these jets.
This artist’s concept shows two views of the active galaxy TXS 0128+554, located around 500 million light-years away. Left: The galaxy’s central jets appear as they would if we viewed them both at the same angle. The black hole, embedded in a disk of dust and gas, launches a pair of particle jets traveling at nearly the speed of light. Scientists think gamma rays (magenta) detected by NASA’s Fermi Gamma-ray Space Telescope originate from the base of these jets. As the jets collide with material surrounding the galaxy, they form identical lobes seen at radio wavelengths (orange). The jets experienced two distinct bouts of activity, which created the gap between the lobes and the black hole. Right: The galaxy appears in its actual orientation, with its jets tipped out of our line of sight by about 50 degrees. NASA’s Goddard Space Flight Center Many of the ways we tell one type of AGN from another depend on how they’re oriented from our point of view. With radio galaxies, for example, we see the jets from the side as they’re beaming vast amounts of energy into space. Then there’s blazars, which are a type of AGN that have a jet that is pointed almost directly at Earth, which makes the AGN particularly bright.
Blazar 3C 279’s historic gamma-ray flare in 2015 can be seen in this image from the Large Area Telescope on NASA’s Fermi satellite. During the flare, the blazar outshone the Vela pulsar, usually the brightest object in the gamma-ray sky. NASA/DOE/Fermi LAT Collaboration Fermi has been searching the sky for gamma ray sources since 2008. More than half of the sources it has found have been blazars. Gamma rays are useful because they can tell us a lot about how particles accelerate and how they interact with their environment.
So why do we care about AGN? We know that some AGN formed early in the history of the universe. With their enormous power, they almost certainly affected how the universe changed over time. By discovering how AGN work, we can understand better how the universe came to be the way it is now.
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Last Updated Apr 30, 2025 Related Terms
The Universe Active Galaxies Fermi Gamma-Ray Space Telescope Galaxies Explore More
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By NASA
6 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
JunoCam, the visible light imager aboard NASA’s Juno, captured this enhanced-color view of Ju-piter’s northern high latitudes from an altitude of about 36,000 miles (58,000 kilometers) above the giant planet’s cloud tops during the spacecraft’s 69th flyby on Jan. 28, 2025. Image data: NASA/JPL-Caltech/SwRI/MSSS Image processing: Jackie Branc (CC BY) New data from the agency’s Jovian orbiter sheds light on the fierce winds and cyclones of the gas giant’s northern reaches and volcanic action on its fiery moon.
NASA’s Juno mission has gathered new findings after peering below Jupiter’s cloud-covered atmosphere and the surface of its fiery moon, Io. Not only has the data helped develop a new model to better understand the fast-moving jet stream that encircles Jupiter’s cyclone-festooned north pole, it’s also revealed for the first time the subsurface temperature profile of Io, providing insights into the moon’s inner structure and volcanic activity.
Team members presented the findings during a news briefing in Vienna on Tuesday, April 29, at the European Geosciences Union General Assembly.
“Everything about Jupiter is extreme. The planet is home to gigantic polar cyclones bigger than Australia, fierce jet streams, the most volcanic body in our solar system, the most powerful aurora, and the harshest radiation belts,” said Scott Bolton, principal investigator of Juno at the Southwest Research Institute in San Antonio. “As Juno’s orbit takes us to new regions of Jupiter’s complex system, we’re getting a closer look at the immensity of energy this gas giant wields.”
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Made with data from the JIRAM instrument aboard NASA’s Juno, this animation shows the south polar region of Jupiter’s moon Io during a Dec. 27, 2024, flyby. The bright spots are locations with higher temperatures caused by volcanic activity; the gray areas resulted when Io left the field of view.NASA/JPL/SwRI/ASI – JIRAM Team (A.M.) Lunar Radiator
While Juno’s microwave radiometer (MWR) was designed to peer beneath Jupiter’s cloud tops, the team has also trained the instrument on Io, combining its data with Jovian Infrared Auroral Mapper (JIRAM) data for deeper insights.
“The Juno science team loves to combine very different datasets from very different instruments and see what we can learn,” said Shannon Brown, a Juno scientist at NASA’s Jet Propulsion Laboratory in Southern California. “When we incorporated the MWR data with JIRAM’s infrared imagery, we were surprised by what we saw: evidence of still-warm magma that hasn’t yet solidified below Io’s cooled crust. At every latitude and longitude, there were cooling lava flows.”
The data suggests that about 10% of the moon’s surface has these remnants of slowly cooling lava just below the surface. The result may help provide insight into how the moon renews its surface so quickly as well as how as well as how heat moves from its deep interior to the surface.
“Io’s volcanos, lava fields, and subterranean lava flows act like a car radiator,” said Brown, “efficiently moving heat from the interior to the surface, cooling itself down in the vacuum of space.”
Looking at JIRAM data alone, the team also determined that the most energetic eruption in Io’s history (first identified by the infrared imager during Juno’s Dec. 27, 2024, Io flyby) was still spewing lava and ash as recently as March 2. Juno mission scientists believe it remains active today and expect more observations on May 6, when the solar-powered spacecraft flies by the fiery moon at a distance of about 55,300 miles (89,000 kilometers).
This composite image, derived from data collected in 2017 by the JIRAM instrument aboard NASA’s Juno, shows the central cyclone at Jupiter’s north pole and the eight cy-clones that encircle it. Data from the mission indicates these storms are enduring fea-tures.NASA/JPL-Caltech/SwRI/ASI/INAF/JIRAM Colder Climes
On its 53rd orbit (Feb 18, 2023), Juno began radio occultation experiments to explore the gas giant’s atmospheric temperature structure. With this technique, a radio signal is transmitted from Earth to Juno and back, passing through Jupiter’s atmosphere on both legs of the journey. As the planet’s atmospheric layers bend the radio waves, scientists can precisely measure the effects of this refraction to derive detailed information about the temperature and density of the atmosphere.
So far, Juno has completed 26 radio occultation soundings. Among the most compelling discoveries: the first-ever temperature measurement of Jupiter’s north polar stratospheric cap reveals the region is about 11 degrees Celsius cooler than its surroundings and is encircled by winds exceeding 100 mph (161 kph).
Polar Cyclones
The team’s recent findings also focus on the cyclones that haunt Jupiter’s north. Years of data from the JunoCam visible light imager and JIRAM have allowed Juno scientists to observe the long-term movement of Jupiter’s massive northern polar cyclone and the eight cyclones that encircle it. Unlike hurricanes on Earth, which typically occur in isolation and at lower latitudes, Jupiter’s are confined to the polar region.
By tracking the cyclones’ movements across multiple orbits, the scientists observed that each storm gradually drifts toward the pole due to a process called “beta drift” (the interaction between the Coriolis force and the cyclone’s circular wind pattern). This is similar to how hurricanes on our planet migrate, but Earthly cyclones break up before reaching the pole due to the lack of warm, moist air needed to fuel them, as well as the weakening of the Coriolis force near the poles. What’s more, Jupiter’s cyclones cluster together while approaching the pole, and their motion slows as they begin interacting with neighboring cyclones.
“These competing forces result in the cyclones ‘bouncing’ off one another in a manner reminiscent of springs in a mechanical system,” said Yohai Kaspi, a Juno co-investigator from the Weizmann Institute of Science in Israel. “This interaction not only stabilizes the entire configuration, but also causes the cyclones to oscillate around their central positions, as they slowly drift westward, clockwise, around the pole.”
The new atmospheric model helps explain the motion of cyclones not only on Jupiter, but potentially on other planets, including Earth.
“One of the great things about Juno is its orbit is ever-changing, which means we get a new vantage point each time as we perform a science flyby,” said Bolton. “In the extended mission, that means we’re continuing to go where no spacecraft has gone before, including spending more time in the strongest planetary radiation belts in the solar system. It’s a little scary, but we’ve built Juno like a tank and are learning more about this intense environment each time we go through it.”
More About Juno
NASA’s Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Juno mission for the principal investigator, Scott Bolton, of the Southwest Research Institute in San Antonio. Juno is part of NASA’s New Frontiers Program, which is managed at NASA’s Marshall Space Flight Center in Huntsville, Alabama, for the agency’s Science Mission Directorate in Washington. The Italian Space Agency funded the Jovian InfraRed Auroral Mapper. Lockheed Martin Space in Denver built and operates the spacecraft. Various other institutions around the U.S. provided several of the other scientific instruments on Juno.
More information about Juno is at: https://www.nasa.gov/juno
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NASA Headquarters, Washington
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Last Updated Apr 29, 2025 Related Terms
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By Space Force
When a social media message pops up offering a high-paying consulting job from an unknown recruiter, it’s easy to be intrigued, but think twice. For many current and former members of the Department of the Air Force, and increasingly, across the entire U.S. government workforce, this is the first step in a recruitment scheme by foreign intelligence entities, officials warn.
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By NASA
Credit: NASA NASA is marking progress in strengthening the agency’s small business partnerships, supply chain resiliency, and domestic space manufacturing capabilities.
Under the agency’s enhanced Mentor-Protégé Program, NASA has announced the first Mentor-Protégé Agreement between L3Harris Technologies, a NASA large prime contractor, and Parametric Machining, Inc., a veteran-owned small business.
This agreement will help advance NASA’s mission by fostering innovation and reinforcing the agency’s supply chain. As NASA continues to advance the Artemis campaign, deep space exploration, and aeronautics research, partnerships like this are essential in securing a resilient and efficient supplier base.
“We are excited to facilitate the first agreement under the newly enhanced NASA Mentor-Protégé Program,” said Dwight Deneal, assistant administrator for NASA’s Office of Small Business Programs. “This agreement, and the many that will follow, promote domestic ingenuity and manufacturing and provide opportunities for small businesses to grow and thrive within NASA’s industrial base.”
Through Mentor-Protégé Agreements, large prime contractors serve as mentors, offering technical and business development assistance to small business protégés. This collaboration not only enhances protégés’ capabilities but also provides mentors with a stronger, more reliable subcontracting base, enabling them to fill their supply chain gaps. Additionally, protégés gain potential prime and subcontract opportunities, enhanced technical capabilities, technical training, and long-term business growth.
Relaunched in November 2024, the merit-based NASA Mentor-Protégé Program is designed to bolster small business development while strengthening NASA’s supply chain and industry base. By focusing on a targeted set of North American Industry Classification System codes, including research and development and aerospace manufacturing, NASA ensures that participating small businesses are well-positioned to contribute to long-term mission objectives.
The agreement between L3Harris Technologies and Parametric Machining, Inc. demonstrates the value of NASA’s revamped Mentor-Protégé Program. NASA is actively accepting new Mentor-Protégé Agreements and encourages large prime contractors and small businesses to explore the benefits of forming partnerships under the program. Participating in the Mentor-Protégé Program provides:
Enhanced manufacturing capabilities and subcontracting opportunities. Mentorship from experienced NASA prime contractors. Opportunities to advance competitiveness in government contracts. Access to technical assistance and business development support. A pathway for small businesses to integrate into NASA’s supply chain. L3Harris Technologies is a prime contractor at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, supporting the Geostationary Extended Observations Imager Instrument Implementation contract. NASA Goddard also will serve as the administering center for this agreement.
For more information on NASA’s Mentor-Protégé Program and how to participate, visit:
https://www.nasa.gov/osbp/mentor-protege-program
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Last Updated Apr 17, 2025 ContactTiernan P. Doyletiernan.doyle@nasa.govLocationNASA Headquarters Related Terms
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By NASA
Explore This Section Science Science Activation Exploring the Universe Through… Overview Learning Resources Science Activation Teams SME Map Opportunities More Science Activation Stories Citizen Science 3 min read
Exploring the Universe Through Sight, Touch, and Sound
For the first time in history, we can explore the universe through a rich blend of senses—seeing, touching, and hearing astronomical data—in ways that deepen our understanding of space. While three-dimensional (3D) models are essential tools for scientific discovery and analysis, their potential extends far beyond the lab.
Space can often feel distant and abstract, like watching a cosmic show unfold on a screen light-years away. But thanks to remarkable advances in technology, software, and science, we can now transform telescope data into detailed 3D models of objects millions or even billions of miles away. These models aren’t based on imagination—they are built from real data, using measurements of motion, light, and structure to recreate celestial phenomena in three dimensions.
What’s more, we can bring these digital models into the physical world through 3D printing. Using innovations in additive manufacturing, data becomes something you can hold in your hands. This is particularly powerful for children, individuals who are blind or have low vision, and anyone with a passion for lifelong learning. Now, anyone can quite literally grasp a piece of the universe.
These models also provide a compelling way to explore concepts like scale. While a 3D print might be just four inches wide, the object it represents could be tens of millions of billions of times larger—some are so vast that a million Earths could fit inside them. Holding a scaled version of something so massive creates a bridge between human experience and cosmic reality.
In addition to visualizing and physically interacting with the data, we can also listen to it. Through a process called sonification, telescope data is translated into sound, making information accessible and engaging in a whole new way. Just like translating a language, sonification conveys the essence of astronomical data through audio, allowing people to “hear” the universe.
To bring these powerful experiences to communities across the country, NASA’s Universe of Learning, in collaboration with the Library of Congress, NASA’s Chandra X-ray Observatory, and the Space Telescope Science Institute, has created Mini Stars 3D Kits that explore key stages of stellar evolution. These kits have been distributed to Library of Congress state hubs across the United States to engage local learners through hands-on and multisensory discovery.
Each Mini Stars Kit includes:
Three 3D-printed models of objects within our own Milky Way galaxy: Pillars of Creation (M16/Eagle Nebula) – a stellar nursery where new stars are born Eta Carinae – a massive, unstable star system approaching the end of its life Crab Nebula – the aftermath of a supernova, featuring a dense neutron star at its core Audio files with data sonifications for each object—mathematical translations of telescope data into sound Descriptive text to guide users through each model’s scientific significance and sensory interpretation These kits empower people of all ages and abilities to explore the cosmos through touch and sound—turning scientific data into a deeply human experience. Experience your universe through touch and sound at: https://chandra.si.edu/tactile/ministar.html
Credits:
3D Prints Credit: NASA/CXC/ K. Arcand, A. Jubett, using software by Tactile Universe/N. Bonne & C. Krawczyk & Blender
Sonifications: Dr. Kimberly Arcand (CXC), astrophysicist Dr. Matt Russo, and musician Andrew Santaguida (both of the SYSTEM Sounds project)
3D Model: K. Arcand, R. Crawford, L. Hustak (STScI)
Photo of NASA’s Universe of Learning (UoL) 3D printed mini star kits sent to the Library of Congress state library hubs. The kits include 3D printed models of stars, sonifications, data converted into sound, and descriptive handouts available in both text and braille. Share
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Last Updated Apr 14, 2025 Editor NASA Science Editorial Team Related Terms
Science Activation 3D Resources Astrophysics Manufacturing, Materials, 3-D Printing The Universe Explore More
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