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Explore NASA’s Jet Propulsion Laboratory With the New Virtual Tour – Museum, Mission Control, Building Space Robots, etc.

By Jet Propulsion Laboratory January 24, 2021

JPL Virtual Tour

From visiting mission control to seeing where space robots are built, the interactive tour lets online users explore the historic space facility from anywhere in the world.

Have you ever wondered where the rovers we send to Mars are built, or where spacecraft that explore the cosmos return their data to Earth? In a typical year, over 30,000 people visit NASA ’s Jet Propulsion Laboratory in person; now, for the first time ever, you can see the Southern California facility from anywhere in the world on a virtual tour.

In the von Kármán Auditorium and the lab’s Visitor Center Museum, you can learn about JPL ’s early years, including its involvement in launching America’s first satellite, Explorer 1, which led to the formation of NASA. You’ll also find full-scale models of some of our most beloved spacecraft, including Voyager, Galileo, and the Mars Exploration Rovers Spirit and Opportunity in these rooms.

“Seeing JPL from the inside is an amazing experience, and we hope this virtual tour creates the same sense of wonder,” said Veronica McGregor, manager of JPL’s Digital News and Media Office. “We plan to expand the tour with more locations later this year so people can return over and over.”

The virtual lab tour is a collaboration of the JPL Digital News and Media Office and the Public Services Office, which handles in-person tours and other visitor activities. The tour staff’s expertise, honed from ushering thousands of visitors through the lab each year, was invaluable in creating the dozens of points of interest included in each virtual tour stop. In-person tours at JPL have been suspended since March 2020 due to the pandemic.

A next goal is to create hosted virtual tours for classrooms. “Our staff will now be working virtually with schools and teachers to help them navigate this new online tour of JPL,” said Kim Lievense, manager of the Public Services Office. “As with our in-person tours, specific points of interest were designed with grade-appropriate curriculum in mind.”

Visit the JPL Virtual Tour

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Tue, Jul 18

Virtual Technical Tour (Zoom)

NASA Jet Propulsion Laboratory Virtual Public Tour

ASCE Los Angeles Younger Member Forum is joining forces with NASA Jet Propulsion Laboratory (JPL) to bring a virtual educational tour to our members. This 60-minute virtual tour will provide an overview of JPL's accomplishments and current activities.

Time & Location

Jul 18, 2023, 1:00 PM – 2:00 PM PDT

About the Event

ASCE Los Angeles Younger Member Forum (LA YMF) Professional Development Committee has partnered up with NASA Jet Propulsion Laboratory (JPL) at California Institute of Technology (Caltech) to host a virtual public educational tour to educate our members about the current activities of JPL. All educational tours commonly include a multimedia presentation entitled "Journey to the Planets and Beyond". Our members will have the opportunity to virtually tour the Spacecraft Assembly Facility and Space Flight Operations Facility with the narration from the JPL staff.

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NASA’s Juno Provides High-Definition Views of Europa’s Icy Shell

Jupiter’s moon Europa was captured by the JunoCam instrument aboard NASA’s Juno spacecraft during the mission’s close flyby on Sept. 29, 2022. The images show the fractures, ridges, and bands that crisscross the moon’s surface.

Imagery from the solar-powered spacecraft shows some intriguing features on the ice-encased Jovian moon.

Images from the JunoCam visible-light camera aboard NASA’s Juno spacecraft supports the theory that the icy crust at the north and south poles of Jupiter’s moon Europa is not where it used to be. Another high-resolution picture of the icy moon, by the spacecraft’s Stellar Reference Unit (SRU), reveals signs of possible plume activity and an area of ice shell disruption where brine may have recently bubbled to the surface.

The JunoCam results recently appeared in the Planetary Science Journal and the SRU results in the journal JGR Planets .

On Sept. 29, 2022, Juno made its closest flyby of Europa , coming within 220 miles (355 kilometers) of the moon’s frozen surface. The four pictures taken by JunoCam and one by the SRU are the first high-resolution images of Europa since Galileo’s last flyby in 2000.

True Polar Wander

Juno’s ground track over Europa allowed imaging near the moon’s equator. When analyzing the data, the JunoCam team found that along with the expected ice blocks, walls, scarps, ridges, and troughs, the camera also captured irregularly distributed steep-walled depressions 12 to 31 miles (20 to 50 kilometers) wide. They resemble large ovoid pits previously found in imagery from other locations of Europa.

This black-and-white image of Europa’s surface was taken by the Stellar Reference Unit (SRU) aboard NASA’s Juno spacecraft during the Sept. 29, 2022, flyby. The chaos feature nicknamed “the Platypus” is seen in the lower right corner.

This annotated image of Europa’s surface from Juno’s SRU shows the location of a double ridge running east-west (blue box) with possible plume stains and the chaos feature the team calls “the Platypus” (orange box). These features hint at current surface activity and the presence of subsurface liquid water on the icy Jovian moon.

A giant ocean is thought to reside below Europa’s icy exterior, and these surface features have been associated with “ true polar wander ,” a theory that Europa’s outer ice shell is essentially free-floating and moves.

“True polar wander occurs if Europa’s icy shell is decoupled from its rocky interior, resulting in high stress levels on the shell, which lead to predictable fracture patterns,” said Candy Hansen, a Juno co-investigator who leads planning for JunoCam at the Planetary Science Institute in Tucson, Arizona. “This is the first time that these fracture patterns have been mapped in the southern hemisphere, suggesting that true polar wander’s effect on Europa’s surface geology is more extensive than previously identified.”

Need Some Space?

The high-resolution JunoCam imagery has also been used to reclassify a formerly prominent surface feature from the Europa map.

“Crater Gwern is no more,” said Hansen. “What was once thought to be a 13-mile-wide impact crater — one of Europa’s few documented impact craters — Gwern was revealed in JunoCam data to be a set of intersecting ridges that created an oval shadow.”

The Platypus

Although all five Europa images from Juno are high-resolution, the image from the spacecraft’s black-and-white SRU offers the most detail. Designed to detect dim stars for navigation purposes, the SRU is sensitive to low light. To avoid over-illumination in the image, the team used the camera to snap the nightside of Europa while it was lit only by sunlight scattered off Jupiter (a phenomenon called “Jupiter-shine”).

This innovative approach to imaging allowed complex surface features to stand out, revealing intricate networks of cross-cutting ridges and dark stains from potential plumes of water vapor. One intriguing feature, which covers an area 23 miles by 42 miles (37 kilometers by 67 kilometers), was nicknamed by the team “the Platypus” because of its shape.

Characterized by chaotic terrain with hummocks, prominent ridges, and dark reddish-brown material, the Platypus is the youngest feature in its neighborhood. Its northern “torso” and southern “bill” — connected by a fractured “neck” formation — interrupt the surrounding terrain with a lumpy matrix material containing numerous ice blocks that are 0.6 to 4.3 miles (1 to 7 kilometers) wide. Ridge formations collapse into the feature at the edges of the Platypus.

For the Juno team, these formations support the idea that Europa’s ice shell may give way in locations where pockets of briny water from the subsurface ocean are present beneath the surface.

About 31 miles (50 kilometers) north of the Platypus is a set of double ridges flanked by dark stains similar to features found elsewhere on Europa that scientists have hypothesized to be cryovolcanic plume deposits.

“These features hint at present-day surface activity and the presence of subsurface liquid water on Europa,” said Heidi Becker, lead co-investigator for the SRU at NASA’s Jet Propulsion Laboratory in Southern California, which also manages the mission. “The SRU’s image is a high-quality baseline for specific places NASA’s Europa Clipper mission and ESA’s (European Space Agency’s) Juice missions can target to search for signs of change and brine.”

Europa Clipper ’s focus is on Europa — including investigating whether the icy moon could have conditions suitable for life. It is scheduled to launch on the fall of 2024 and arrive at Jupiter in 2030. Juice (Jupiter Icy Moons Explorer) launched on April 14, 2023. The ESA mission will reach Jupiter in July 2031 to study many targets (Jupiter’s three large icy moons, as well as fiery Io and smaller moons, along with the planet’s atmosphere, magnetosphere, and rings) with a special focus on Ganymede.

Juno executed its 61st close flyby of Jupiter on May 12. Its 62nd flyby of the gas giant, scheduled for June 13, includes an Io flyby at an altitude of about 18,200 miles (29,300 kilometers).

More About the Mission

JPL, 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 (ASI) funded the Jovian InfraRed Auroral Mapper. Lockheed Martin Space in Denver built and operates the spacecraft.

More information about Juno is available at:

https://www.nasa.gov/juno

News Media Contact

Jet Propulsion Laboratory, Pasadena, Calif.

818-393-9011

[email protected]

Karen Fox / Charles Blue

NASA Headquarters

202-385-1287 / 202-802-5345

[email protected] / [email protected]

Southwest Research Institute, San Antonio

210-522-2254

[email protected]

New NASA Black Hole Visualization Takes Viewers Beyond the Brink

Ever wonder what happens when you fall into a black hole? Now, thanks to a new, immersive visualization produced on a NASA supercomputer, viewers can plunge into the event horizon, a black hole’s point of no return.

“People often ask about this, and simulating these difficult-to-imagine processes helps me connect the mathematics of relativity to actual consequences in the real universe,” said Jeremy Schnittman, an astrophysicist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, who created the visualizations. “So I simulated two different scenarios, one where a camera — a stand-in for a daring astronaut — just misses the event horizon and slingshots back out, and one where it crosses the boundary, sealing its fate.”

The visualizations are available in multiple forms. Explainer videos act as sightseeing guides, illuminating the bizarre effects of Einstein’s general theory of relativity. Versions rendered as 360-degree videos let viewers look all around during the trip, while others play as flat all-sky maps.

To create the visualizations, Schnittman teamed up with fellow Goddard scientist Brian Powell and used the Discover supercomputer at the NASA Center for Climate Simulation . The project generated about 10 terabytes of data — equivalent to roughly half of the estimated text content in the Library of Congress — and took about 5 days running on just 0.3% of Discover’s 129,000 processors. The same feat would take more than a decade on a typical laptop.

The destination is a supermassive black hole with 4.3 million times the mass of our Sun, equivalent to the monster located at the center of our Milky Way galaxy.

“If you have the choice, you want to fall into a supermassive black hole,” Schnittman explained. “Stellar-mass black holes, which contain up to about 30 solar masses,  possess much smaller event horizons and stronger tidal forces, which can rip apart approaching objects before they get to the horizon.”

This occurs because the gravitational pull on the end of an object nearer the black hole is much stronger than that on the other end. Infalling objects stretch out like noodles, a process astrophysicists call spaghettification .

The simulated black hole’s event horizon spans about 16 million miles (25 million kilometers), or about 17% of the distance from Earth to the Sun. A flat, swirling cloud of hot, glowing gas called an accretion disk surrounds it and serves as a visual reference during the fall. So do glowing structures called photon rings, which form closer to the black hole from light that has orbited it one or more times. A backdrop of the starry sky as seen from Earth completes the scene.

As the camera approaches the black hole, reaching speeds ever closer to that of light itself, the glow from the accretion disk and background stars becomes amplified in much the same way as the sound of an oncoming racecar rises in pitch. Their light appears brighter and whiter when looking into the direction of travel.

The movies begin with the camera located nearly 400 million miles (640 million kilometers) away, with the black hole quickly filling the view. Along the way, the black hole’s disk, photon rings, and the night sky become increasingly distorted — and even form multiple images as their light traverses the increasingly warped space-time.

In real time, the camera takes about 3 hours to fall to the event horizon, executing almost two complete 30-minute orbits along the way. But to anyone observing from afar, it would never quite get there. As space-time becomes ever more distorted closer to the horizon, the image of the camera would slow and then seem to freeze just shy of it. This is why astronomers originally referred to black holes as “frozen stars.”

At the event horizon, even space-time itself flows inward at the speed of light, the cosmic speed limit. Once inside it, both the camera and the space-time in which it's moving rush toward the black hole's center — a one-dimensional point called a singularity , where the laws of physics as we know them cease to operate.

“Once the camera crosses the horizon, its destruction by spaghettification is just 12.8 seconds away,” Schnittman said. From there, it’s only 79,500 miles (128,000 kilometers) to the singularity. This final leg of the voyage is over in the blink of an eye.

In the alternative scenario, the camera orbits close to the event horizon but it never crosses over and escapes to safety. If an astronaut flew a spacecraft on this 6-hour round trip while her colleagues on a mothership remained far from the black hole, she’d return 36 minutes younger than her colleagues. That’s because time passes more slowly near a strong gravitational source and when moving near the speed of light.

“This situation can be even more extreme,” Schnittman noted. “If the black hole were rapidly rotating, like the one shown in the 2014 movie ‘Interstellar,’ she would return many years younger than her shipmates.”

By Francis Reddy NASA’s Goddard Space Flight Center , Greenbelt, Md. Media Contact: Claire Andreoli 301-286-1940 [email protected] NASA’s Goddard Space Flight Center, Greenbelt, Md.

Related Terms

• Astrophysics
• Black Holes
• Galaxies, Stars, & Black Holes
• Galaxies, Stars, & Black Holes Research
• Goddard Space Flight Center
• Supermassive Black Holes
• The Universe

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The marshall star for may 15, 2024.

Joint Chiefs Vice Chairman Visits Marshall

Marshall team members honored with space flight awareness awards, nasa’s boeing crew flight test eyes next launch opportunity, i am artemis: lauren fisher, nasa licenses 3d-printable superalloy to benefit us economy, agency’s new mobile launcher stacks up for future artemis missions , chandra notices the galactic center is venting, juno mission spots jupiter’s tiny moon amalthea, hubble glimpses a star-forming factory.

Navy Adm. Christopher Grady, vice chairman of the Joint Chiefs of Staff, his wife Christine Grady, and son Luke Grady talk with Nick Benjamin, right, a payload operations director for the International Space Station, at the Payload Operations Integration Center during the vice chairman’s tour of NASA’s Marshall Space Flight Center on May 6. (NASA/Charles Beason)

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Astronaut Victor Glover, far right, and Bill Hill, second from right, director of safety and mission assurance at NASA’s Marshall Space Flight Center join Marshall honorees for a photo op at the Space Flight Awareness Honoree Ceremony on May 4 in Orlando, Florida. Honoree awards recognize civil servants and industry partners for outstanding work and dedication to astronaut safety. From left, Cody Goodman, David Starrett, John Ivester, Lisa Hughes, Greg Snell, Megan Vansant, Megan Hines, Karl Nelson, Les Johnson, Shawn Reagan, Hill, and Glover. Marshall honorees also include Maggie Freeman, who was unable to attend the awards event. (NASA)

NASA, Boeing, and ULA (United Launch Alliance) teams continue working remaining open tasks in preparation for the agency’s Boeing Crew Flight Test to the International Space Station. The teams now are targeting a launch date of no earlier than 3:43 p.m. CDT May 21, to complete additional testing.

On May 11, the ULA team successfully replaced a pressure regulation valve on the liquid oxygen tank on the Atlas V rocket’s Centaur upper stage. The team also performed re-pressurization and system purges, and tested the new valve, which performed normally.

The Atlas V and Starliner remain in the Vertical Integration Facility at Space Launch Complex-41 on Cape Canaveral Space Force Station.

NASA astronauts Butch Wilmore and Suni Williams, still in preflight quarantine, returned to Houston on May 10 to spend extra time with their families as prelaunch operations progress. The duo will fly back to NASA’s Kennedy Space Center in the coming days.

Wilmore and Williams are the first to launch aboard Boeing’s Starliner to the space station as part of the agency’s Commercial Crew Program . The astronauts will spend about a week at the orbiting laboratory before returning to Earth and making a parachute and airbag-assisted landing in the southwestern United States.

After successful completion of the mission, NASA will begin the final process of certifying Starliner and its systems for crewed rotation missions to the space station.

Not many music majors get to be hands-on with building a Moon rocket, but Lauren Fisher has always enjoyed the unusual.

Now a structural materials engineer at NASA’s Marshall Space Flight Center, Fisher works on a key adapter for NASA’s  SLS (Space Launch System) rocket  for the first crewed missions of NASA’s Artemis campaign.

Manufactured at Marshall by NASA, lead contractor Teledyne Brown Engineering, and the Jacobs Space Exploration Group’s ESSCA contract, the cone-shaped launch vehicle stage adapter partially encloses the rocket’s interim cryogenic propulsion stage and connects it to the core stage below and the Orion stage adapter above. The launch vehicle stage adapter also protects avionics and electrical devices from extreme vibration and acoustic conditions during launch and ascent.

Fisher and the  thermal protection system  team develop and apply the spray-on foam that acts as insulation and protects the adapter and all its systems from the extreme pressures and temperatures it’ll face during flight. The thermal protection system for the component, unlike other parts of the rocket, is applied by hand using a spray gun. When first applied, the insulation is yellow, but after time and exposure to the Sun, it turns orange.

“We’re taking the same stuff someone might use to insulate their attic, except making it for cryogenic atmospheres, and spraying it all over a giant piece of hardware that will help launch us to the Moon,” Fisher said. “With my work for NASA’s Space Launch System rocket, I get to play with foam and glue. I like to call it arts and crafts engineering!”

Although engineering runs in her family, Fisher initially graduated from University of Southern Mississippi with a Bachelor of Arts in music performance and an interest in music education. She developed an interest in carbon-based polymers, and decided to go back to school, completing a chemical engineering degree with a polymeric materials track from the University of Alabama in Huntsville. Her new degree led to an opportunity to work for the thermal protection system team at Marshall.

When Fisher isn’t in the office, she likes travelling to unusual places and checking items off her self-described “Bizarre Bucket List.” Recently, she went to Punxsutawney, Pennsylvania, to watch the famous groundhog predict an early spring.

Being part of the Artemis Generation is incredibly inspiring for Fisher, who takes pride in her work supporting the first three Artemis missions, including  Artemis II , the first crewed mission under Artemis, in 2025.

“I’m literally building the hardware that will send the first woman to deep space,” Fisher says. “Watching our rocket take shape, I’m like ‘you see that thing? I did that; that’s mine. See that one? My team did that one. We did that, and see this?’” She beams with pride. “You can do that, too. Just being a part of the generation that’s changing the workforce and changing the space program  —  it gives me goosebumps.”

NASA is working to land the first woman, first person of color, and its first international partner astronaut on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with the Orion spacecraft and Gateway in orbit around the Moon and commercial human landing systems, next-generational spacesuits, and rovers on the lunar surface. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single launch.

NASA’s investment in a breakthrough superalloy developed for the extreme temperatures and harsh conditions of air and spaceflight is on the threshold of paying commercial dividends.

The agency is licensing its invention, dubbed “ GRX-810 ,” to four American companies, a practice that benefits the United States economy as a return on investment of taxpayer dollars.

GRX-810 is a 3D-printable high-temperature material that will lead to stronger, more durable airplane and spacecraft parts that can withstand more punishment before reaching their breaking point.

The co-exclusive license agreements will allow the companies to produce and market GRX-810 to airplane and rocket equipment manufacturers as well as the entire supply chain.

The four co-exclusive licensees are:

• Carpenter Technology Corporation of Reading, Pennsylvania
• Elementum 3D, Inc. of Erie, Colorado
• Linde Advanced Material Technologies, Inc. of Indianapolis
• Powder Alloy Corporation of Loveland, Ohio

GRX-810 is one example of many new technologies  NASA’s Technology Transfer Program  managers review and file for patent protection. The team also works with inventors to find partners interested in commercialization. 

“NASA invests tax dollars into research that demonstrates direct benefit to the U.S. and transfers its technologies to industry by licensing its patents,” said Amy Hiltabidel, licensing manager at NASA’s Glenn Research Center.

NASA engineers designed GRX-810 for aerospace applications, including liquid rocket engine injectors, combustors, turbines, and hot-section components capable of enduring temperatures over 2,000 degrees Fahrenheit.

“GRX-810 represents a new alloy design space and manufacturing technique that was impossible a few years ago,” said Tim Smith, materials researcher at NASA Glenn.

Smith co-invented the superalloy along with his Glenn colleague Christopher Kantzos using a time-saving computer modeling and laser 3D-printing process that fuses metals together, layer-by-layer. Tiny particles containing oxygen atoms spread throughout the alloy enhance its strength.

Compared to other nickel-base alloys, GRX-810 can endure higher temperatures and stress and can last up to 2,500 times longer. It’s also nearly four times better at flexing before breaking and twice as resistant to oxidation damage.

“Adoption of this alloy will lead to more sustainable aviation and space exploration,” said Dale Hopkins, deputy project manager of NASA’s Transformational Tools and Technologies project. “This is because jet engine and rocket components made from GRX-810 will lower operating costs by lasting longer and improving overall fuel efficiency.”

Research and development teams include those from Glenn, NASA’s Ames Research Center, Ohio State University, and NASA’s Marshall Space Flight Center, where the most recent testing included 3D-printed rocket engine parts.

Marshall completed a successful hot-fire test series at Test Stand 115 in 2023. This test series demonstrated GRX-810 injectors and regeneratively cooled nozzles for liquid rocket engines. The center is working to advance additive manufacturing for propulsion applications, but also developing 3D-printing technologies to deploy in space for manufacturing. Marshall has capabilities for the entire design, analysis, manufacturing, hot- fire testing, and certification lifecycle of complex additively manufactured propulsion components and engine systems to enable high performance for NASA, government, and commercial space missions.

NASA develops many technologies to solve the challenges of space exploration, advance the understanding of our home planet, and improve air transportation. Through patent licensing and other mechanisms, NASA has  spun off more than 2,000 technologies  for companies to develop into products and solutions supporting the American economy.

The foundation is set at NASA’s Kennedy Space Center for launching crewed missions aboard the agency’s larger and more powerful SLS (Space Launch System) Block 1B rocket in support of  Artemis IV  and future missions. On May 9, teams with NASA’s EGS (Exploration Ground Systems) Program and contractor Bechtel National Inc. transferred the primary base structure of the mobile launcher 2 to its permanent mount mechanisms using the spaceport’s beast-mode transporter –  the crawler .  

The  mobile launcher  serves as the primary interface between the ground launch systems, SLS rocket, and Orion spacecraft that will launch the SLS Block 1B rocket, with its  enhanced upper stage , to the Moon, allowing the agency to send astronauts and heavier cargo into lunar orbit than its predecessor, SLS Block 1. With Artemis, NASA will land the first woman, first person of color, and its first international partner astronaut on the lunar surface and establish long-term exploration for scientific discovery and to prepare for human missions to Mars.  

NASA’s Marshall Space Flight Center manages the SLS Program.

Read more about the mobile launcher.

Recent images show evidence for an exhaust vent attached to a chimney releasing hot gas from a region around the  supermassive black hole  at the center of the  Milky Way , as reported in a  press release . In the main image of this graphic,  X-rays  from  NASA’s Chandra X-ray Observatory  (blue) have been combined with  radio  data from the MeerKAT telescope (red).

Previously, astronomers had identified a “chimney” of hot gas near the Galactic Center using X-ray data from Chandra and ESA’s XMM-Newton. Radio emission detected by MeerKAT shows the effect of  magnetic fields  enclosing the gas in the chimney.

The evidence for the exhaust vent is highlighted in the inset, which includes only Chandra data. Several X-ray ridges showing brighter X-rays appear in white, roughly perpendicular to the plane of the Galaxy. Researchers think these are the walls of a tunnel, shaped like a cylinder, which helps funnel hot gas as it moves upwards along the chimney and away from the Galactic Center.

A labeled version of the image gives the locations of the exhaust vent, the chimney, the supermassive black hole at the center of the Milky Way Galaxy (called Sagittarius A*, or Sgr A* for short) and the plane of the galaxy.

This newly discovered vent is located near the top of the chimney about 700  light-years  from the center of the Galaxy. To emphasize the chimney and exhaust vent features the image has been rotated by 180 degrees from the conventional orientation used by astronomers, so that the chimney is pointed upwards.

The authors of the new study think that the exhaust vent formed when hot gas rising through the chimney struck cooler gas lying in its path. The brightness of the exhaust vent walls in X-rays is caused by shock waves – like sonic booms from supersonic planes – generated by this collision. The left side of the exhaust vent is likely particularly bright in X-rays because the gas flowing upwards is striking the tunnel wall at a more direct angle and with more force than other regions.

The researchers determined that the hot gas is most likely coming from a sequence of events involving material falling towards Sgr A*. They think eruptions from the black hole then drove the gas upwards along the chimneys, and out through the exhaust vent.

It is unclear how often material is falling onto Sgr A*. Previous studies have indicated that dramatic X-ray flares take place every few hundred years at or near the location of the central black hole, so those could play important roles in driving the hot gas upwards through the exhaust vent. Astronomers also estimate that the Galactic black hole rips apart and swallows a  star  every 20,000 years or so. Such events would lead to powerful, explosive releases of energy, much of which would be destined to rise through the chimney vent.

The paper describing these results is published in The Astrophysical Journal and a preprint  is available online . The authors of the paper are Scott Mackey (University of Chicago), Mark Morris (University of California, Los Angeles), Gabriele Ponti (Italian National Institute of Astrophysics in Merate), Konstantina Anastasopoulou (Italian National Institute of Astrophysics in Palermo), and Samaresh Mondal (Italian National Institute of Astrophysics in Merate).

NASA’s Marshall Space Flight Center manages the Chandra program. The Smithsonian Astrophysical Observatory’s Chandra X-ray Center controls science operations from Cambridge, Massachusetts, and flight operations from Burlington, Massachusetts.

Read more from NASA’s Chandra X-ray Observatory.

NASA’s Juno mission captured new views of Jupiter during its 59th close flyby of the giant planet on March 7. They provide a good look at Jupiter’s colorful belts and swirling storms, including the Great Red Spot. Close examination reveals something more: two glimpses of the tiny moon Amalthea.

With a radius of just 52 miles, Amalthea has a potato-like shape, lacking the mass to pull itself into a sphere. In 2000, NASA’s Galileo spacecraft revealed some surface features, including impact craters, hills, and valleys. Amalthea circles Jupiter inside Io’s orbit, which is the innermost of the planet’s four largest moons, taking 0.498 Earth days to complete one orbit.

Amalthea is the reddest object in the solar system, and observations indicate it gives out more heat than it receives from the Sun. This may be because, as it orbits within Jupiter’s powerful magnetic field, electric currents are induced in the moon’s core. Alternatively, the heat could be from tidal stresses caused by Jupiter’s gravity.

At the time that the first of these two images was taken, the Juno spacecraft was about 165,000 miles above Jupiter’s cloud tops, at a latitude of about 5 degrees north of the equator.

Citizen scientist Gerald Eichstädt made these images using raw data from the JunoCam instrument, applying processing techniques to enhance the clarity of the images.

NASA’s Jet Propulsion Laboratory, a division of Caltech, 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 for the agency’s Science Mission Directorate. The Italian Space Agency (ASI) funded the Jovian InfraRed Auroral Mapper. Lockheed Martin Space in Denver built and operates the spacecraft.

Learn more about NASA citizen science .

The celestial object showcased in an image from the NASA/ESA  Hubble Space Telescope  is the spiral galaxy UGC 9684, which lies around 240 million light-years from Earth in the constellation Boötes. This image shows an impressive example of several classic galactic features, including a clear bar in the galaxy’s center, and a halo surrounding its disk.

The data for this Hubble image came from a study of Type-II supernovae host galaxies. These cataclysmic stellar explosions take place throughout the universe, and are of great interest to astronomers, so automated surveys scan the night sky and attempt to catch sight of them. The supernova which brought UGC 9684 to Hubble’s attention occurred in 2020. It has since faded from view and is not visible in this image, which was taken in 2023.

Remarkably, the 2020 supernova isn’t the only one that astronomers have seen in this galaxy – UGC 9684 has hosted four supernova-like events since 2006, putting it up there with the most active supernova-producing galaxies. It turns out that UGC 9684 is a quite active star-forming galaxy, calculated as producing one solar mass worth of stars every few years. The most massive of these stars are short-lived, a few million years, and end their days as supernova explosions. This high level of star formation makes UGC 9684 a veritable supernova factory, and a galaxy to watch for astronomers hoping to examine these exceptional events.