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By NASA
NASA/CXC/SAO/D. Bogensberger et al; Image Processing: NASA/CXC/SAO/N. Wolk; Even matter ejected by black holes can run into objects in the dark. Using NASA’s Chandra X-ray Observatory, astronomers have found an unusual mark from a giant black hole’s powerful jet striking an unidentified object in its path.
The discovery was made in a galaxy called Centaurus A (Cen A), located about 12 million light-years from Earth. Astronomers have long studied Cen A because it has a supermassive black hole in its center sending out spectacular jets that stretch out across the entire galaxy. The black hole launches this jet of high-energy particles not from inside the black hole, but from intense gravitational and magnetic fields around it.
The image shows low-energy X-rays seen by Chandra represented in pink, medium-energy X-rays in purple, and the highest-energy X-rays in blue.
In this latest study, researchers determined that the jet is — at least in certain spots — moving at close to the speed of light. Using the deepest X-ray image ever made of Cen A, they also found a patch of V-shaped emission connected to a bright source of X-rays, something that had not been seen before in this galaxy.
Called C4, this source is located close to the path of the jet from the supermassive black hole and is highlighted in the inset. The arms of the “V” are at least about 700 light-years long. For context, the nearest star to Earth is about 4 light-years away.
Source C4 in the Centaurus A galaxy.NASA/CXC/SAO/D. Bogensberger et al; Image Processing: NASA/CXC/SAO/N. Wolk; While the researchers have ideas about what is happening, the identity of the object being blasted is a mystery because it is too distant for its details to be seen, even in images from the current most powerful telescopes.
The incognito object being rammed may be a massive star, either by itself or with a companion star. The X-rays from C4 could be caused by the collision between the particles in the jet and the gas in a wind blowing away from the star. This collision can generate turbulence, causing a rise in the density of the gas in the jet. This, in turn, ignites the X-ray emission seen with Chandra.
The shape of the “V,” however, is not completely understood. The stream of X-rays trailing behind the source in the bottom arm of the “V” is roughly parallel to the jet, matching the picture of turbulence causing enhanced X-ray emission behind an obstacle in the path of the jet. The other arm of the “V” is harder to explain because it has a large angle to the jet, and astronomers are unsure what could explain that.
This is not the first time astronomers have seen a black hole jet running into other objects in Cen A. There are several other examples where a jet appears to be striking objects — possibly massive stars or gas clouds. However, C4 stands out from these by having the V-shape in X-rays, while other obstacles in the jet’s path produce elliptical blobs in the X-ray image. Chandra is the only X-ray observatory capable of seeing this feature. Astronomers are trying to determine why C4 has this different post-contact appearance, but it could be related to the type of object that the jet is striking or how directly the jet is striking it.
A paper describing these results appears in a recent issue of The Astrophysical Journal. The authors of the study are David Bogensberger (University of Michigan), Jon M. Miller (University of Michigan), Richard Mushotsky (University of Maryland), Niel Brandt (Penn State University), Elias Kammoun (University of Toulouse, France), Abderahmen Zogbhi (University of Maryland), and Ehud Behar (Israel Institute of Technology).
NASA’s Marshall Space Flight Center in Huntsville, Alabama, 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.
Learn more about the Chandra X-ray Observatory and its mission here:
https://www.nasa.gov/chandra
https://chandra.si.edu
Visual Description
This release features a series of images focusing on a collision between a jet of matter blasting out of a distant black hole, and a mysterious, incognito object.
At the center of the primary image is a bright white dot, encircled by a hazy purple blue ring tinged with neon blue. This is the black hole at the heart of the galaxy called Centaurus A. Shooting out of the black hole is a stream of ejected matter. This stream, or jet, shoots in two opposite directions. It shoots toward us, widening as it reaches our upper left, and away from us, growing thinner and more faint as it recedes toward the lower right. In the primary image, the jet resembles a trail of hot pink smoke. Other pockets of granular, hot pink gas can be found throughout the image. Here, pink represents low energy X-rays observed by Chandra, purple represents medium energy X-rays, and blue represents high energy X-rays.
Near our lower right, where the jet is at its thinnest, is a distinct pink “V”, its arms opening toward our lower right. This mark is understood to be the result of the jet striking an unidentified object that lay in its path. A labeled version of the image highlights this region, and names the point of the V-shape, the incognito object, C4. A wide view version of the image is composited with optical data.
At the distance of Cen A, the arms of the V-shape appear rather small. In fact, each arm is at least 700 light-years long. The jet itself is 30,000 light-years long. For context, the nearest star to the Sun is about 4 light-years away.
News Media Contact
Megan Watzke
Chandra X-ray Center
Cambridge, Mass.
617-496-7998
mwatzke@cfa.harvard.edu
Lane Figueroa
Marshall Space Flight Center, Huntsville, Alabama
256-544-0034
lane.e.figueroa@nasa.gov
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By NASA
7 Min Read 2024 Be An Astronaut Campaign
NASA astronaut Andrew Morgan tethered to the International Space Station during a spacewalk. Credits: NASA NASA astronauts have been traveling to space for more than six decades and living there continuously since 2000. Now, NASA’s Artemis program is preparing to land the first woman and the next man on the Moon. As NASA continues to expand human exploration in our solar system, we will need more than the currently active astronauts to crew spacecraft bound for deep-space destinations.
Every four years, NASA opens its doors and welcomes thousands of applicants to join a new class of astronauts that will push human spaceflight to new depths. Astronaut applications opened March 5, 2024, and closed April 16, 2024. In those 42 days, NASA’s 2024 Be An Astronaut Campaign used various platforms to promote the beauty of human spaceflight, explore opportunities to reach untapped and underserved audiences, encourage the younger generations to follow their dreams and pursue a career as an astronaut, and inspire the world about the capabilities we have as humans to explore farther than we ever have before.
Official “Be a NASA Astronaut” Video
To kick off the astronaut recruitment campaign, NASA, NASA Johnson, NASA Artemis, and NASA Astronauts accounts collaborated on a video narrated by Morgan Freeman on Instagram reaching over 9.7 million views. This video, seen below, was shared across agency social media platforms, YouTube, and digital sites to introduce the start of the astronaut application period.
The Universe is Calling: Apply to Be a NASA Astronaut, official NASA astronaut recruitment video featuring a voice over by Morgan Freeman. "Spaceflight is just one part of it. You are a team member before you are any thing in this role."
April Jordan
Manager of NASA Astronaut Selection
Throughout the campaign, #BeAnAstronaut was utilized to increase campaign awareness and engagement. This hashtag was used by 36 agency accounts and totaled 167 posts across the agency. With over 15,000 social media mentions, 256,655 total page views throughout the campaign, and news presence on the Today Show, TIME Magazine, Yahoo News, The New York Times, and more, the Be An Astronaut campaign was a successful and exciting project that inspired aspiring astronauts to follow their dreams.
2024 Astronaut Graduation
On March 5, 2024, not only did astronaut applications open, but the 2021 class of NASA astronaut candidates graduated, officially making them astronauts and eligible for spaceflight. These newly graduated astronauts created a superlative to demonstrate just how NASA’s astronaut corps works as a team and family as they passed the torch down to NASA’s next class of astronauts.
The 2024 astronaut graduating class gives you an insider’s look at not only the who’s who of their graduating class, but it allows you to get a glimpse of the accomplished astronauts’ personalities. To see them together as a group, connecting through laughter helps to illustrate how much they value team care. These classic superlatives give the scoop on which astronaut is the best dancer, the funniest, and more. Enjoy seeing a lighter side of “The Flies” in this fun and upbeat montage of the 2024 astronaut graduating class.
Astronaut Candidate Countdown
Our astronaut graduation countdown campaign celebrated the most recent graduating class of astronauts. The previous class completed two years of rigorous training at Johnson Space Center before they officially gained their wings. This campaign not only highlighted their achievements, but hopefully inspired potential candidates by showcasing the journey from trainee to astronaut. During the graduation ceremony, applications for the next astronaut class were announced, continuing the legacy of excellence and exploration.
NASA astronaut Luke Delaney poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Jessica Wittner poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Jack Hathaway poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Andre Douglas poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Nichole Ayers poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Marcos Berrios poses for the Astronaut Graduation Countdown.Credit: NASA Mohammed Bin Rashid Space Center astronaut Nora AlMatrooshi poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Anil Menon poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Deniz Burnham poses for the Astronaut Graduation Countdown.Credit: NASA Mohammed Bin Rashid Space Center astronaut Mohammed AlMulla poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Christina Birch poses for the Astronaut Graduation Countdown.Credit: NASA NASA astronaut Christopher Williams poses for the Astronaut Graduation Countdown.Credit: NASA
NASA Tumblr Thread
For many people, human spaceflight has been a part of their lives for decades. After years of exploring, hundreds of astronauts have shared their unique experiences with the world and inspired many to want to follow in their footsteps. With over 100 thousand impressions on Tumblr, NASA posted a unique thread on “5 Myths About Becoming an Astronaut”.
https://www.tumblr.com/nasa/132538793869/5-myths-about-becoming-an-astronaut NASA’s Tumblr thread on “5 Myths About Becoming an Astronaut”. Credit: NASA
STEM Pinterest Pin
Reaching various audiences of all ages, backgrounds, demographics, and experiences was key during the Be An Astronaut Campaign. Not only was it important for this campaign to reach qualifying applicants, but it was just as important to reach the aspiring astronauts of the younger generation.
NASA posted on Pinterest 10 ways students can kick-start their space journeys within NASA’s Office of STEM Engagement, or OSTEM. Through this post, NASA was able to reach over 40 thousand students and share ways to get involved with NASA’s missions.
A NASA astronaut during a spacewalk outside the International Space Station with the text, “10 Ways Students Can Prepare to #BeAnAstronaut”Credit: NASA "[NASA’s] decisions have led us to having an astronaut office that looks very much like America. You could reach in and grab any four people, and they would look like our crew.”
Victor glover
NASA Astronaut, Artemis II Pilot
NASA @ SXSW
A graphic of the International Space Station with the text, “Live from Space at SXSW: NASA Astronauts and Your Work in Orbit”.Credit: NASA NASA astronauts Jeanette Epps and Loral O’Hara joined NASA experts at the South by Southwest conference in Austin, Texas live from space on March 12, 2024. The astronauts joined a panel from aboard the International Space Station to discuss what it’s like to be an astronaut, how people can get involved with space station research and technology, and how to apply to become an astronaut.
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Kristin Fabre, Jennifer Buchli, Leah Cheshier, Loral O’Hara & Jeanette Epps at Featured Session: Live from Space: NASA Astronauts & Your Work in Orbit as part of SXSW 2024 Conference and Festivals held at the Austin Convention Center on March 12, 2024 in Austin, Texas. Credit: Stephen Olker/SXSW Conference & Festivals via Getty Images)
Vice President Encourages Applicants
Vice President Kamala Harris quoted NASA on X to encourage people to apply to become an astronaut reaching more than 885 thousand users on the social media platform.
Vice President Kamala Harris’ post on X stating, “As Chair of the National Space Council, I am honored to witness our astronauts’ skill and determination first-hand. There is no typical path for an astronaut, and the next class of NASA astronauts will continue to lead the world in space exploration.”.
Astronaut Reddit AMA
Our Astronaut Recruitment Reddit AMA on March 20th was the top post on Reddit with 25 million subscribers, and stayed pinned to the top of the subreddit for several days. NASA astronauts Shannon Walker, Jessica Watkins, and Luke Delaney discussed what it takes to be an astronaut as well as personal insights into their journey.
Merriam-Webster Word of the Day: Astronaut
NASA astronaut and member of the recently graduated 2021 class of NASA astronauts, Deniz Burnham, participated in the “Word of the Day” series with Merriam-Webster defining the word ‘astronaut’. Just weeks after officially becoming an astronaut, Deniz’s video was featured on Merriam-Webster’s website and social media platforms.
NASA astronaut Deniz Burnham featured in Merriam-Webster’s word of the day video defining the word “astronaut”.
Houston, We Have a Podcast
On NASA’s top-rated podcast, “Houston We Have a Podcast,” our astronaut recruitment episode garnered over 4,000 plays on Apple Podcasts and more than 1,000 plays on Spotify. In this episode, the manager of NASA astronaut selection discussed the selection process and how to apply for an out-of-this-world career.
A lone spacesuit can be seen in the middle of the image, as a black shadow of the helmet reflects three question marks.Credit: NASA United States Army Astronaut Recruitment Video
NASA astronaut and U.S. Army Col. Anne McClain discussed her experience as an astronaut and how other members of the U.S. Army can apply to become an astronaut and travel to space like her. This video was posted on the U.S. Army’s social media as well as posted to YouTube reaching thousands of supporters in and of the military.
Col. Anne McClain, commander of the U.S. Army NASA detachment, shares information on eligibility as well as where and when to apply to become a NASA astronaut like herself. Credit: U.S. Army Read More
Become An Astronaut Webpage
NASA’s ‘Become An Astronaut’ webpage drove 246,655 viewers to the page throughout the duration of the recruitment campaign from internal and external collaborations across various digital platforms and events. Listing job requirements, frequently asked questions, and how to apply, the webpage consisted of 87.1% new visitors to the site and had almost 28 thousand referrals from Instagram.
NASA’s ‘Become An Astronaut’ webpage.Credit: NASA Read More
The 2024 Be An Astronaut Campaign ranged from March 5, 2024 to April 16, 2024 and successfully integrated various platforms, outreach opportunities, and educational resources into the recruitment of our next class of astronauts.
With over 15 thousand social media mentions, 2 thousand news outlet mentions, $4.6 million in publicity value, a 91% positive sentiment, and 195 countries involved in the conversation, the campaign was able to inspire NASA’s future space explorers and push the agency closer to returning to the Moon and going to Mars.
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Last Updated Dec 09, 2024 Related Terms
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By NASA
NASA astronaut and Expedition 72 Commander Suni Williams checks out the Astrobee robotic free-flyer in the Kibo laboratory module outfitted with tentacle-like arms containing gecko-like adhesive pads to demonstrate satellite capture techniques. Development of this robotic technology may increase the life span of satellites and enable the removal of space debris.NASA In this picture from Nov. 15, 2024, Astronaut Suni Williams imitates the tentacle-like arms of the Astrobee robotic free-flyer in the foreground.
Astrobee robots help astronauts reduce time they spend on routine duties, leaving them to focus more on the things that only humans can do. Working autonomously or via remote control by astronauts, flight controllers or researchers on the ground, the robots are designed to complete tasks such as taking inventory, documenting experiments conducted by astronauts with their built-in cameras or working together to move cargo throughout the station. In addition, the system serves as a research platform that can be outfitted and programmed to carry out experiments in microgravity – helping us to learn more about how robotics can benefit astronauts in space.
Image credit: NASA
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By NASA
NASA/Ben Smegelsky Employees at NASA’s Kennedy Space Center in Florida and NASA astronaut Victor Glover (right) happily snap a photo of themselves during a visit on Nov. 8, 2024. The employees are part of the agency’s Exploration Ground Systems (EGS), which develops and operates the systems and facilities needed to process and launch rockets and spacecraft for NASA’s Artemis missions. EGS plays a primary role in assembly, launch, and recovery of rockets and spacecraft.
Image credit: NASA/Ben Smegelsky
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By Space Force
Astronauts aboard the ISS conducted an educational downlink, a communication signal from the spacecraft back to Earth, for Denver School of Science and Technology students.
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