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Rare Ultra-blue Stars Found in Neighboring Galaxy's Hub
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By NASA
Michelle Dominguez proudly displays her award at the Women of Color STEM Conference in Detroit, Michigan, October 2024.NASA Dorcas Kaweesa holding her award at the Women of Color STEM Conference in Detroit, Michigan, October 2024. NASA In October 2024, Michelle Dominguez and Dorcas Kaweesa from the Ames Aeromechanics Office were each awarded as a “Technology Rising Star” at the Women of Color STEM Conference in Detroit, Michigan. Rising Star awards are for “young women, with 21 years or less in the workforce, who are helping to shape technology for the future.” Ms. Dominguez is a Mechanical Systems Engineer working on rotorcraft design for vertical-lift vehicles such as air taxis and Mars helicopters. Dr. Kaweesa is a Structural Analysis Engineer and Deputy Manager for planetary rotorcraft initiatives including Mars Exploration Program and Mars Sample Return. More information on this award is at https://intouch.ccgmag.com/mpage/woc-stem-conference-awardees .
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By NASA
Webb Webb News Latest News Latest Images Blog (offsite) Awards X (offsite – login reqd) Instagram (offsite – login reqd) Facebook (offsite- login reqd) Youtube (offsite) Overview About Who is James Webb? Fact Sheet Impacts+Benefits FAQ Science Overview and Goals Early Universe Galaxies Over Time Star Lifecycle Other Worlds Observatory Overview Launch Orbit Mirrors Sunshield Instrument: NIRCam Instrument: MIRI Instrument: NIRSpec Instrument: FGS/NIRISS Optical Telescope Element Backplane Spacecraft Bus Instrument Module Multimedia About Webb Images Images Videos What is Webb Observing? 3d Webb in 3d Solar System Podcasts Webb Image Sonifications Team International Team People Of Webb More For the Media For Scientists For Educators For Fun/Learning 6 Min Read Found: First Actively Forming Galaxy as Lightweight as Young Milky Way
Hundreds of overlapping objects at various distances are spread across this field. At the very center is a tiny galaxy nicknamed Firefly Sparkle that looks like a long, angled, dotted line. Smaller companions are nearby. Credits:
NASA, ESA, CSA, STScI, Chris Willott (National Research Council Canada), Lamiya Mowla (Wellesley College), Kartheik Iyer (Columbia University) For the first time, NASA’s James Webb Space Telescope has detected and “weighed” a galaxy that not only existed around 600 million years after the big bang, but is also similar to what our Milky Way galaxy’s mass might have been at the same stage of development. Other galaxies Webb has detected at this time period are significantly more massive. Nicknamed the Firefly Sparkle, this galaxy is gleaming with star clusters — 10 in all — each of which researchers examined in great detail.
Image A: Firefly Sparkle Galaxy and Companions in Galaxy Cluster MACS J1423 (NIRCam Image)
For the first time, astronomers using NASA’s James Webb Space Telescope have identified a galaxy, nicknamed the Firefly Sparkle, that not only is in the process of assembling and forming stars around 600 million years after the big bang, but also weighs about the same as our Milky Way galaxy if we could “wind back the clock” to weigh it as it developed. Two companion galaxies are close by, which may ultimately affect how this galaxy forms and builds mass over billions of years. NASA, ESA, CSA, STScI, Chris Willott (National Research Council Canada), Lamiya Mowla (Wellesley College), Kartheik Iyer (Columbia University) “I didn’t think it would be possible to resolve a galaxy that existed so early in the universe into so many distinct components, let alone find that its mass is similar to our own galaxy’s when it was in the process of forming,” said Lamiya Mowla, co-lead author of the paper and an assistant professor at Wellesley College in Massachusetts. “There is so much going on inside this tiny galaxy, including so many different phases of star formation.”
Webb was able to image the galaxy in crisp detail for two reasons. One is a benefit of the cosmos: A massive foreground galaxy cluster radically enhanced the distant galaxy’s appearance through a natural effect known as gravitational lensing. And when combined with the telescope’s specialization in high-resolution infrared light, Webb delivered unprecedented new data about the galaxy’s contents.
Image B: Galaxy Cluster MACS J1423 (NIRCam Image)
In this image from NASA’s James Webb Space Telescope, thousands of glimmering galaxies are bound together by their own gravity, making up a massive cluster formally classified as MACS J1423. The largest, bright white oval is a supergiant elliptical galaxy. The galaxy cluster acts like a lens, magnifying and distorting the light of objects that lie well behind it, an effect known as gravitational lensing. NASA, ESA, CSA, STScI, Chris Willott (National Research Council Canada), Lamiya Mowla (Wellesley College), Kartheik Iyer (Columbia University) “Without the benefit of this gravitational lens, we would not be able to resolve this galaxy,” said Kartheik Iyer, co-lead author and NASA Hubble Fellow at Columbia University in New York. “We knew to expect it based on current physics, but it’s surprising that we actually saw it.”
Mowla, who spotted the galaxy in Webb’s image, was drawn to its gleaming star clusters, because objects that sparkle typically indicate they are extremely clumpy and complicated. Since the galaxy looks like a “sparkle” or swarm of lightning bugs on a warm summer night, they named it the Firefly Sparkle galaxy.
Reconstructing the Galaxy’s Appearance
The research team modeled what the galaxy might have looked like if it weren’t stretched and discovered that it resembled an elongated raindrop. Suspended within it are two star clusters toward the top and eight toward the bottom. “Our reconstruction shows that clumps of actively forming stars are surrounded by diffuse light from other unresolved stars,” said Iyer. “This galaxy is literally in the process of assembling.”
Webb’s data shows the Firefly Sparkle galaxy is on the smaller side, falling into the category of a low-mass galaxy. Billions of years will pass before it builds its full heft and a distinct shape. “Most of the other galaxies Webb has shown us aren’t magnified or stretched, and we are not able to see their ‘building blocks’ separately. With Firefly Sparkle, we are witnessing a galaxy being assembled brick by brick,” Mowla said.
Stretched Out and Shining, Ready for Close Analysis
Since the galaxy is warped into a long arc, the researchers easily picked out 10 distinct star clusters, which are emitting the bulk of the galaxy’s light. They are represented here in shades of pink, purple, and blue. Those colors in Webb’s images and its supporting spectra confirmed that star formation didn’t happen all at once in this galaxy, but was staggered in time.
“This galaxy has a diverse population of star clusters, and it is remarkable that we can see them separately at such an early age of the universe,” said Chris Willott from the National Research Council of Canada’s Herzberg Astronomy and Astrophysics Research Centre, a co-author and the observation program’s principal investigator. “Each clump of stars is undergoing a different phase of formation or evolution.”
The galaxy’s projected shape shows that its stars haven’t settled into a central bulge or a thin, flattened disk, another piece of evidence that the galaxy is still forming.
Image C: Illustration of the Firefly Sparkle Galaxy in the Early Universe (Artist’s Concept)
This artist concept depicts a reconstruction of what the Firefly Sparkle galaxy looked like about 600 million years after the big bang if it wasn’t stretched and distorted by a natural effect known as gravitational lensing. This illustration is based on images and data from NASA’s James Webb Space Telescope. Illustration: NASA, ESA, CSA, Ralf Crawford (STScI). Science: Lamiya Mowla (Wellesley College), Guillaume Desprez (Saint Mary’s University) Video: “Firefly Sparkle” Reveals Early Galaxy
‘Glowing’ Companions
Researchers can’t predict how this disorganized galaxy will build up and take shape over billions of years, but there are two galaxies that the team confirmed are “hanging out” within a tight perimeter and may influence how it builds mass over billions of years.
Firefly Sparkle is only 6,500 light-years away from its first companion, and its second companion is separated by 42,000 light-years. For context, the fully formed Milky Way is about 100,000 light-years across — all three would fit inside it. Not only are its companions very close, the researchers also think that they are orbiting one another.
Each time one galaxy passes another, gas condenses and cools, allowing new stars to form in clumps, adding to the galaxies’ masses. “It has long been predicted that galaxies in the early universe form through successive interactions and mergers with other tinier galaxies,” said Yoshihisa Asada, a co-author and doctoral student at Kyoto University in Japan. “We might be witnessing this process in action.”
The team’s research relied on data from Webb’s CAnadian NIRISS Unbiased Cluster Survey (CANUCS), which includes near-infrared images from NIRCam (Near-Infrared Camera) and spectra from the microshutter array aboard NIRSpec (Near-Infrared Spectrograph). The CANUCS data intentionally covered a field that NASA’s Hubble Space Telescope imaged as part of its Cluster Lensing And Supernova survey with Hubble (CLASH) program.
This work has been published on December 11, 2024 in the journal Nature.
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
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Claire Blome – cblome@stsci.edu, Christine Pulliam – cpulliam@stsci.edu
Space Telescope Science Institute, Baltimore, Md.
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Last Updated Dec 10, 2024 Editor Marty McCoy Contact Laura Betz laura.e.betz@nasa.gov Related Terms
Astrophysics Galaxies Galaxy clusters Goddard Space Flight Center Gravitational Lensing James Webb Space Telescope (JWST) Science & Research The Universe View the full article
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
U.S. Ambassador to El Salvador, William H. Duncan, speaks to attendees at the SERVIR Central America launch in San Salvador. SERVIR SERVIR, NASA’s flagship partnership with the U.S. Agency for International Development (USAID), launched a new regional center, or hub, in Central America on Dec. 3. The new hub is in partnership with the Tropical Agricultural Research and Higher Education Center in Turrialba, Costa Rica, and is supported by the USAID Central America and Mexico Regional Program. The launch event took place in San Salvador, El Salvador.
The event introduced guests to the structure and mission of the new hub, featuring remarks from SERVIR Global Program Manager Dan Irwin and video overviews of some of its planned projects. Karen St Germain, director of NASA’s Earth Science Division and U.S. Ambassador to El Salvador, William H. Duncan, provided recorded remarks congratulating the new program.
Central America holds a special place in SERVIR’s history. Over three decades ago, Dan Irwin, research scientist at NASA’s Marshall Space Flight Center in Huntsville, Alabama, and SERVIR’s founder and Global Program Manager, was working in Guatemala to use satellite data to map a new forest reserve. During this time, Irwin met with representatives from Central American environmental ministries to demonstrate how NASA Earth data could help to address environmental challenges and reduce disaster risk.
“In this meeting, I realized that NASA has a vast library of Earth data, but this information wasn’t being used by experts across the globe who have the best understanding of local development issues. I wanted to find a way to bridge that gap,” Irwin shared.
Under Irwin’s leadership, NASA and USAID partnered to create the SERVIR program, which was formally established in 2005. SERVIR’s mission is to “connect space to village,” increasing global access to NASA Earth data to support locally led environmental and development efforts.
SERVIR Global Program Manager Dan Irwin from NASA’s Marshall Space Flight Center speaks about the history of the SERVIR program at the Central America launch in San Salvador. SERVIR SERVIR soon expanded its partnerships across the globe, with regional hubs in South America, Asia, and Africa.
SERVIR Central America will work to serve more than 40 million people throughout the region, collaborating with governments, universities, and civil society organizations to support existing natural resource management and development decision-making. The hub will support resilience against environmental challenges including hurricanes, droughts, deforestation, and biodiversity loss.
SERVIR Central America will also strengthen the region’s technical capacity to use Earth observations and promote opportunities in science, technology, engineering, and math. The hub will expand the use of geospatial technology by young people and other groups with limited access to these tools.
“The launch of SERVIR Central America marks a milestone in the collaboration between space-based technology and Central America’s local needs,” said Irwin. “This initiative represents NASA and USAID’s commitment to putting advanced technology at the service of the region.”
To learn more about SERVIR, visit:
https://www.nasa.gov/servir
Elizabeth Vlock
Headquarters, Washington
202-358-1600
elizabeth.a.vlock@nasa.gov
Lane Figueroa
Huntsville, Alabama
256.544.0034
lane.e.figueroa@nasa.gov
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By NASA
NASA and the U.S. Agency for International Development (USAID) invite media to the official launch celebration of the new SERVIR Central America regional hub, located in Costa Rica, on Tuesday, Dec. 3, at 11 a.m. EST. The event will be hosted by NASA SERVIR Program Manager Daniel Irwin, U.S. Ambassador to El Salvador William H. Duncan, and a representative from El Salvador’s Ministry of Environment and Natural Resources (MARN).
Betzy Hernandez from SERVIR’s Science Coordination Office leads a land cover mapping workshop in Belize. NASA and the U.S. Agency for International Development (USAID) are opening a new SERVIR Central America regional hub, located in Costa Rica, on Tuesday, Dec. 3. NASA Central America is the latest addition to SERVIR’s global network, a NASA and USAID initiative that has been operating in Asia, Africa, and Latin America since 2005.
Implemented by the Tropical Agricultural Research and Higher Education Center (CATIE), SERVIR Central America will strengthen climate resilience, sustainable resource management, and biodiversity conservation through satellite data and geospatial technology. The SERVIR Central America hub will support evidence-based decision-making at local, national, and regional levels, strengthening the resilience of more than 40 million people in one of the world’s most climate-vulnerable regions.
The event will be in Spanish with English translation available.
For press access and location details, please RSVP to Belarminda Quijano at belarminda@bqcomunicaciones.com by Monday, Dec. 2. NASA’s media accreditation policy is online. The event will be livestreamed.
For more information on SERVIR, visit:
https://www.nasa.gov/servir
Elizabeth Vlock
Headquarters, Washington
202-358-1600
elizabeth.a.vlock@nasa.gov
Lane Figueroa
Huntsville, Alabama
256-544-0034
lane.e.figueroa@nasa.gov
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By NASA
The NASA Ames Science Directorate recognizes the outstanding contributions of (pictured left to right) Forrest Melton, Ariel Deutsch, Dan Sirbu, and Chanel Idos. Their commitment to the NASA mission represents the entrepreneurial spirit, technical expertise, and collaborative disposition needed to explore this world and beyond.
Earth Science Star: Forrest Melton
Forrest Melton serves as Senior Research Scientist with the Atmospheric Science Branch, and leads the OpenET consortium, which develops a unique satellite-driven support system for water resources management using six satellite-driven models and publicly available data from NASA, USGS and NOAA. OpenET currently provides data for 23 states in the western U.S., delivers data at daily, monthly, seasonal and annual timescales, and has become a necessary tool for domestic and international water managers and agricultural producers (feature story).
Space Science & Astrobiology Star: Ariel Deutsch
Ariel Deutsch is an early career planetary scientist in the Planetary Systems Branch for the Bay Area Environmental Research Institute. She is recognized for being invited to join the Artemis II Science Team to support the Artemis II Lunar Science Objectives. Her Lunar Data Analysis Program grant was selected to improve our understanding of the distribution and abundance of volatiles cold-trapped on the Moon, which include Artemis III candidate landing sites.
Space Science & Astrobiology Star: Dan Sirbu
Dan Sirbu is a key member of the Exoplanet Technologies group within the Astrophysics Branch. He currently serves as the principal investigator on the Photonic Integrated Circuit High-Contrast Imaging for Space Astronomy (AstroPIC) early career initiative, serves multiple roles on the Multi-Star Wavefront Control (MSWC) project, and is involved in outreach efforts. In recent months, Dan has been the primary operator performing MSWC testing, setting several new performance records demonstrating high contrast imaging of planets around binary stars. Dan’s work also advances NASA’s and humanity’s capability of imaging exoplanets in multi-star systems, including Alpha Centauri, the nearest star system to the Sun.
Space Biosciences Star: Chanel Idos
Chanel Idos serves as the ARC Resource Analyst for the Human Research Program (HRP) in the Space Biosciences Division. HRP is a multifaceted initiative encompassing six Elements and Offices at JSC and three Divisions across two Directorates at ARC. Her exceptional expertise, coupled with outstanding organizational skills and clear, effective communication, have been instrumental in ensuring the seamless operation of HRP activities at ARC. Chanel’s contributions have been pivotal in achieving excellent cost performance for FY24, positioning ARC to enter FY25 in an optimal state.
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