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By NASA
Hubble Space Telescope Home Hubble Takes a Look at Tangled… Hubble Space Telescope Hubble Home Overview About Hubble The History of Hubble Hubble Timeline Why Have a Telescope in Space? Hubble by the Numbers At the Museum FAQs Impact & Benefits Hubble’s Impact & Benefits Science Impacts Cultural Impact Technology Benefits Impact on Human Spaceflight Astro Community Impacts Science Hubble Science Science Themes Science Highlights Science Behind Discoveries Hubble’s Partners in Science Universe Uncovered Explore the Night Sky Observatory Hubble Observatory Hubble Design Mission Operations Missions to Hubble Hubble vs Webb Team Hubble Team Career Aspirations Hubble Astronauts News Hubble News Hubble News Archive Social Media Media Resources Multimedia Multimedia Images Videos Sonifications Podcasts E-books Lithographs Fact Sheets Glossary Posters Hubble on the NASA App More Online Activities 2 min read
Hubble Takes a Look at Tangled Galaxies
This Hubble image features a pair of interacting spiral galaxies called MCG+05-31-045. ESA/Hubble & NASA, R. J. Foley (UC Santa Cruz)
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This NASA/ESA Hubble Space Telescope image depicts the cosmic tangle that is MCG+05-31-045, a pair of interacting galaxies located 390 million light-years away and a part of the Coma galaxy cluster.
The Coma Cluster is a particularly rich cluster that contains over a thousand known galaxies. Amateur astronomers can easily spot several of these in a backyard telescope (See Caldwell 35). Most of them are elliptical galaxies, and that’s typical of a dense galaxy cluster like the Coma Cluster: many elliptical galaxies form through close encounters between galaxies that stir them up, or even collisions that rip them apart. While the stars in interacting galaxies can stay together, their gas is twisted and compressed by gravitational forces and rapidly used up to form new stars. When the hot, massive, blue stars die, there is little gas left to form new generations of young stars to replace them. As spiral galaxies interact, gravity disrupts the regular orbits that produce their striking spiral arms. Whether through mergers or simple near misses, the result is a galaxy almost devoid of gas, with aging stars orbiting in uncoordinated circles: an elliptical galaxy.
It’s very likely that a similar fate will befall MCG+05-31-045. As the smaller spiral galaxy is torn up and integrated into the larger galaxy, many new stars will form, and the hot, blue ones will quickly burn out, leaving cooler, redder stars behind in an elliptical galaxy, much like others in the Coma Cluster. But this process won’t be complete for many millions of years.
Explore more Coma Cluster images from Hubble.
Hubble Uncovers Thousands of Globular Star Clusters Scattered Among Galaxies Hubble’s Galaxies With Knots, Bursts Hubble Sees Near and Far Hubble Sees Plunging Galaxy Losing Its Gas Hubble Catches Galaxies Swarmed by Star Clusters Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Media Contact:
Claire Andreoli
NASA’s Goddard Space Flight Center, Greenbelt, MD
claire.andreoli@nasa.gov
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Last Updated Nov 14, 2024 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms
Astrophysics Astrophysics Division Hubble Space Telescope Spiral Galaxies Keep Exploring Discover More Topics From Hubble
Hubble Space Telescope
Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.
Galaxy Details and Mergers
Hubble’s Galaxies
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By NASA
NASA/Cory S Huston The Stanley Cup, won in 2024 by the Florida Panthers, made a visit to the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center on Sept. 17, 2024, as part of its championship tour.
The VAB currently houses components of the agency’s Artemis II mission, the first crewed mission on NASA’s path to establishing a long-term presence at the Moon for science and exploration through Artemis. Artemis II will send four astronauts around the Moon, testing NASA’s foundational human deep space exploration capabilities, the SLS rocket, and Orion spacecraft.
Image Credit: NASA/Cory S Huston
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NAACP Board Chair Leon Russell, left, and NASA Administrator Bill Nelson, right, sign a Space Act Agreement between NASA and the NAACP during a 5th Annual Hidden Figures Street Naming Anniversary event Thursday, Sept. 19, 2024, at the Mary W. Jackson NASA Headquarters building in Washington. NASA/Keegan Barber During an event Thursday, NASA and the National Association for the Advancement of Colored People (NAACP) signed a Space Act Agreement to increase engagement and equity for underrepresented students pursuing science, technology, engineering, and mathematics (STEM) fields and to improve access to agency activities and opportunities.
“NASA and the NAACP share a longstanding commitment to attracting more diverse students to STEM education and ultimately careers,” said Shahra Lambert, senior advisor for engagement and equity, NASA headquarters. “This agreement reaffirms that commitment and solidifies a partnership that will enable us to expand opportunities for more students of color to build their STEM identity and gain real-world experience through NASA STEM education, mentorship, and career awareness. With the NAACP’s help we’ll be able to truly impact young minds who will be our future scientists, engineers, explorers and more.”
As part of the agreement, the NAACP will incorporate NASA STEM lessons, content, and themes into its Afro-Academic, Cultural, Technological and Scientific Olympics (ACT-SO) achievement program, which is a series of competitions where students compete for scholarships and other incentives in areas ranging from performing and culinary arts to business and STEM. In turn, NASA will provide guidance on programming, participate in information sharing, provide mentorship, and facilitate tours of NASA facilities when appropriate.
“Much like NASA, brave, brilliant, Black women were critical to the success of the NAACP,” said Leon W. Russell, Chairman of the NAACP Board of Directors. “For years, we’ve worked to increase the number of diverse STEM students by providing scholarships and establishing key initiatives. Through our ACT-SO program and this new partnership with NASA, both organizations will make even greater progress to help pave the way for more Katherine Johnsons and Mary Jacksons. By enacting today’s agreement, we hope to increase the number of Black and underrepresented students in the STEM fields and help them reach for the stars.”
While initial efforts will be led by NASA’s Office of STEM Engagement, the umbrella agreement also allows for further collaboration and partnership in the future. Specifically, the agency and the NAACP will look to support certain areas of NASA’s Equity Action Plan.
NASA works to explore the secrets of the universe and solve the world’s most complex problems, which requires creating space for all people to participate in and learn from its work in space. Providing access to opportunities where young minds can be curious and see themselves potentially at NASA and beyond is how the agency will continue to inspire the next generation of STEM innovators.
For more information on how NASA inspires students to pursue STEM visit:
https://www.nasa.gov/learning-resources
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Last Updated Sep 19, 2024 Related Terms
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By NASA
Students participating in NASA’s Minority University Research AND Education Project (MUREP) Innovation and Tech Transfer Idea Competition on-site experience. Credit: Josh Valcarcel NASA is awarding $7.2 million to six minority-serving institutions to grow initiatives in engineering-related disciplines and fields for learners who have historically been underrepresented and underserved in science, technology, engineering, and math (STEM) fields.
“NASA is excited to award funding to six minority-serving institutions, paving the way for greater diversity in engineering and STEM,” said Shahra Lambert, NASA senior advisor for engagement and equity, NASA’s Headquarters in Washington. “NASA is committed to fostering diversity and providing essential academic resources to empower the next generation of innovators.”
NASA’s Minority University Research and Education Project (MUREP), in partnership with the National Science Foundation’s Nation of Communities of Learners of Underrepresented Discoverers in Engineering and Science (INCLUDES) network, provides support to increase diversity in engineering. It offers academic resources to college students, aiming to have a long-term impact on the engineering field.
“With these awards, we are continuing to create pathways that increase access and opportunities in STEM for underrepresented and underserved groups,” said Keya Briscoe, MUREP manager. “NASA continues to invest in initiatives that are critical in driving innovation, fostering inclusion, and providing access to the STEM ecosystem for everyone.”
The awardees and their project titles are as follows:
Alabama A&M University Pathways to NASA: Empowering Underrepresented STEM Talent through Strategic Partnerships and Innovative Learning
Morgan State University – Baltimore Developing NASA Pathways to Broadening Participation in Space Exploration Technology
North Carolina Agricultural and Technical State University Strengthening Opportunities in Aerospace Research and Education
University of Central Florida Hy-POWERED: Hydrogen-POWered Engineering Research and Education for Diversity
University of Colorado, Denver Seed, Support, and Cultivate: Innovative Strategies for Underrepresented Minorities in STEM Education
University of Houston Partnership for Inclusivity in Engineering Education and Research for Space
NASA administers the grants through its Office of STEM Engagement. These investments enhance the research, academic and technology capabilities of minority-serving institutions through multiyear cooperative agreements, while advancing NASA’s vision for a diverse and inclusive workforce.
To learn more about NASA STEM Engagement Funding Opportunities, visit:
https://go.nasa.gov/3AZedZ8
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Abbey Donaldson
Headquarters, Washington
202-269-1600
Abbey.a.donaldson@nasa.gov
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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)
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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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