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By NASA
4 min read
Three-Year Study of Young Stars with NASA’s Hubble Enters New Chapter
In the largest and one of the most ambitious Hubble Space Telescope programs ever executed, a team of scientists and engineers collected information on almost 500 stars over a three-year period. This effort offers new insights into the stars’ formation, evolution, and impact on their surroundings.
This comprehensive survey, called ULLYSES (Ultraviolet Legacy Library of Young Stars as Essential Standards), was completed in December 2023, and provides a rich spectroscopic dataset obtained in ultraviolet light that astronomers will be mining for decades to come. Because ultraviolet light can only be observed from space, Hubble is the only active telescope that can accomplish this research.
The ULLYSES program studied two types of young stars: super-hot, massive, blue stars and cooler, redder, less massive stars than our Sun. The top panel is a Hubble Space Telescope image of a star-forming region containing massive, young, blue stars in 30 Doradus, the Tarantula Nebula. Located within the Large Magellanic Cloud, this is one of the regions observed by ULLYSES. The bottom panel shows an artist’s concept of a cooler, redder, young star that less massive than our Sun. This type of star is still gathering material from its surrounding, planet-forming disk. NASA, ESA, STScI, Francesco Paresce (INAF-IASF Bologna), Robert O’Connell (UVA), SOC-WFC3, ESO
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“I believe the ULLYSES project will be transformative, impacting overall astrophysics – from exoplanets, to the effects of massive stars on galaxy evolution, to understanding the earliest stages of the evolving universe,” said Julia Roman-Duval, Implementation Team Lead for ULLYSES at the Space Telescope Science Institute (STScI) in Baltimore, Maryland. “Aside from the specific goals of the program, the stellar data can also be used in fields of astrophysics in ways we can’t yet imagine.”
The ULLYSES team studied 220 stars, then combined those observations with information from the Hubble archive on 275 additional stars. The program also included data from some of the world’s largest, most powerful ground-based telescopes and X-ray space telescopes. The ULLYSES dataset is made up of stellar spectra, which carry information about each star’s temperature, chemical composition, and rotation.
One type of stars studied under ULLYSES is super-hot, massive, blue stars. They are a million times brighter than the Sun and glow fiercely in ultraviolet light that can easily be detected by Hubble. Their spectra include key diagnostics of the speed of their powerful winds. The winds drive galaxy evolution and seed galaxies with the elements needed for life. Those elements are cooked up inside the stars’ nuclear fusion ovens and then injected into space as a star dies. ULLYSES targeted blue stars in nearby galaxies that are deficient in elements heavier than helium and hydrogen. This type of galaxy was common in the very early universe. “ULLYSES observations are a stepping stone to understanding those first stars and their winds in the universe, and how they impact the evolution of their young host galaxy,” said Roman-Duval.
The other star category in the ULLYSES program is young stars less massive than our Sun. Though cooler and redder than our Sun, in their formative years they unleash a torrent of high-energy radiation, including blasts of ultraviolet light and X-rays. Because they are still growing, they are gathering material from their surrounding planet-forming disks of dust and gas. The Hubble spectra include key diagnostics of the process by which they acquire their mass, including how much energy this process releases into the surrounding planet-forming disk and nearby environment. The blistering ultraviolet light from young stars affects the evolution of these disks as they form planets, as well as the chances of habitability for newborn planets. The target stars are located in nearby star-forming regions in our Milky Way galaxy.
The ULLYSES concept was designed by a committee of experts with the goal of using Hubble to provide a legacy set of stellar observations. “ULLYSES was originally conceived as an observing program utilizing Hubble’s sensitive spectrographs. However, the program was tremendously enhanced by community-led coordinated and ancillary observations with other ground- and space-based observatories,” said Roman-Duval. “Such broad coverage allows astronomers to investigate the lives of stars in unprecedented detail and paint a more comprehensive picture of the properties of these stars and how they impact their environment.”
To that end, STScI hosted a ULLYSES workshop March 11–14 to celebrate the beginning of a new era of research on young stars. The goal was to allow members of the astronomical community to collaborate on the data, so that they could gain momentum in the ongoing analyses, or kickstart new ideas for analysis. The workshop was one important step in exploiting this legacy spectral library to its fullest potential, fulfilling the promise of ULLYSES.
The Hubble Space Telescope has been operating for over three decades and continues to make ground-breaking discoveries that shape our fundamental understanding of the universe. Hubble is a project of international cooperation between NASA and ESA (European Space Agency). NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope and mission operations. Lockheed Martin Space, based in Denver, Colorado, also supports mission operations at Goddard. The Space Telescope Science Institute in Baltimore, Maryland, which is operated by the Association of Universities for Research in Astronomy, conducts Hubble science operations for NASA.
Media Contacts:
Claire Andreoli
NASA’s Goddard Space Flight Center, Greenbelt, MD
claire.andreoli@nasa.gov
Ann Jenkins / Ray Villard
Space Telescope Science Institute, Baltimore, MD
Science Contact:
Julia Roman-Duval
Space Telescope Science Institute, Baltimore, MD
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Last Updated Mar 28, 2024 Editor Andrea Gianopoulos Related Terms
Astrophysics Astrophysics Division Goddard Space Flight Center Hubble Space Telescope Missions Stars The Universe Keep Exploring Discover More Topics From NASA
Hubble Space Telescope
Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.
Stars Stories
Galaxies Stories
Universe
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By Space Force
U.S. Space Force Lt. Col. Deane L. Lake assumed command of U.S. Space Forces Central Combat Detachment 3-1 during an activation and assumption of command ceremony at an undisclosed location within the U.S. Central Command area of responsibility, March 12, 2024.
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By NASA
NASA astronaut Don Pettit poses for a crew portrait at the Gagarin Cosmonaut Training Center.NASA During his fourth mission to the International Space Station, NASA astronaut Don Pettit will serve as a flight engineer and member of the Expedition 71/72 crew. After blasting off to space, Pettit will conduct scientific investigations and technology demonstrations to help prepare crew for future space missions.
Pettit will launch on the Roscosmos Soyuz MS-26 spacecraft in September 2024, accompanied by Roscosmos cosmonauts Alexey Ovchinin and Ivan Vagner. The trio will spend approximately six months aboard the orbital laboratory.
NASA selected Pettit as an astronaut in 1996. A veteran of three spaceflights, he made integral advancements in technology and demonstrations for human exploration. He served as a science officer for Expedition 6 in 2003, operated the robotic arm for STS-126 space shuttle Endeavour in 2008, and served as a flight engineer for Expedition 30/31 in 2012. Pettit has logged 370 days in space and conducted two spacewalks totaling 13 hours and 17 minutes.
The Expedition 6 crew launched on STS-113 space shuttle Endeavour expecting to return on STS-114 space shuttle Discovery after a two and a half month mission. Following the space shuttle Columbia accident that grounded the shuttle fleet, the crew returned on the Soyuz TMA-1 spacecraft after five and a half months, landing in Kazakhstan. On his next 16-day mission, STS-126, Pettit helped expand the living quarters of the space station and installed a regenerative life support system to reclaim potable water from urine. During Expedition 30/31, Pettit also captured the first commercial cargo spacecraft, the SpaceX Dragon, using the robotic arm.
A native from Silverton, Oregon, Pettit holds a bachelor’s degree in chemical engineering from Oregon State University, Corvallis, and a doctorate in chemical engineering from the University of Arizona, Tucson. Prior to his career with NASA, Pettit worked as a staff scientist at the Los Alamos National Laboratory in New Mexico.
For more than two decades, humans have lived and worked continuously aboard the International Space Station, advancing scientific knowledge and making research breakthroughs that are not possible on Earth. The station is a critical testbed for NASA to understand and overcome the challenges of long-duration spaceflight and to expand commercial opportunities in low Earth orbit. As commercial companies focus on providing human space transportation services and destinations as part of a robust low Earth orbit economy, NASA is able to focus more of its resources on deep space missions to the Moon and Mars.
Get breaking news, images and features from the space station on the station blog, Instagram, Facebook, and X.
Learn more about International Space Station research and operations at:
https://www.nasa.gov/station
-end-
Julian Coltre / Claire O’Shea
Headquarters, Washington
202-358-1100
julian.n.coltre@nasa.gov / claire.a.o’shea@nasa.gov
Courtney Beasley
Johnson Space Center, Houston
281-483-5111
courtney.m.beasley@nasa.gov
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Last Updated Mar 27, 2024 LocationNASA Headquarters Related Terms
International Space Station (ISS) Humans in Space ISS Research Missions View the full article
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By NASA
NASA astronaut and backup Soyuz MS-25 Flight Engineer Don Pettit poses for a crew portrait at the Gagarin Cosmonaut Training Center.NASA During his fourth mission to the International Space Station, NASA astronaut Don Pettit will serve as a flight engineer and member of the Expedition 71/72 crew. After blasting off to space, Pettit will conduct scientific investigations and technology demonstrations to help prepare crew for future space missions.
Pettit will launch on the Roscosmos Soyuz MS-26 spacecraft in September 2024, accompanied by Roscosmos cosmonauts Alexey Ovchinin and Ivan Vagner. The trio will spend approximately six months aboard the orbital laboratory.
NASA selected Pettit as an astronaut in 1996. A veteran of three spaceflights, he made integral advancements in technology and demonstrations for human exploration. He served as a science officer for Expedition 6 in 2003, operated the robotic arm for STS-126 space shuttle Endeavour in 2008, and served as a flight engineer for Expedition 30/31 in 2012. Pettit has logged 370 days in space and conducted two spacewalks totaling 13 hours and 17 minutes.
The Expedition 6 crew launched on STS-113 space shuttle Endeavour expecting to return on STS-114 space shuttle Discovery after a two and a half month mission. Following the space shuttle Columbia accident that grounded the shuttle fleet, the crew returned on the Soyuz TMA-1 spacecraft after five and a half months, landing in Kazakhstan. On his next 16-day mission, STS-126, Pettit helped expand the living quarters of the space station and installed a regenerative life support system to reclaim potable water from urine. During Expedition 30/31, Pettit also captured the first commercial cargo spacecraft, the SpaceX Dragon, using the robotic arm.
A native from Silverton, Oregon, Pettit holds a bachelor’s degree in chemical engineering from Oregon State University, Corvallis, and a doctorate in chemical engineering from the University of Arizona, Tucson. Prior to his career with NASA, Pettit worked as a staff scientist at the Los Alamos National Laboratory in New Mexico.
For more than two decades, humans have lived and worked continuously aboard the International Space Station, advancing scientific knowledge and making research breakthroughs that are not possible on Earth. The station is a critical testbed for NASA to understand and overcome the challenges of long-duration spaceflight and to expand commercial opportunities in low Earth orbit. As commercial companies focus on providing human space transportation services and destinations as part of a robust low Earth orbit economy, NASA is able to focus more of its resources on deep space missions to the Moon and Mars.
Get breaking news, images and features from the space station on the station blog, Instagram, Facebook, and X.
Learn more about International Space Station research and operations at:
https://www.nasa.gov/station
-end-
Julian Coltre / Claire O’Shea
Headquarters, Washington
202-358-1100
julian.n.coltre@nasa.gov / claire.a.o’shea@nasa.gov
Courtney Beasley
Johnson Space Center, Houston
281-483-5111
courtney.m.beasley@nasa.gov
View the full article
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
The Gateways to Blue Skies Competition is sponsored by NASA’s Aeronautics Research Mission Directorate and is managed by the National Institute of Aerospace.Image Credit: NASA Eight teams participating in the 2024 Gateways to Blue Skies: Advancing Aviation for Natural Disasters Competition have been selected to present their design concepts to a panel of industry experts at the 2024 Blue Skies Forum, May 30 and 31, 2024 at NASA’s Ames Research Center in Mountain View, California.
Sponsored by NASA’s Aeronautics Research Mission Directorate (ARMD), this year’s Blue Skies Competition asked teams of university students to research and conceptualize aviation-related systems that will aid in natural disaster management, and to submit a five to seven-page proposal and a video summarizing their concept.
“We are thrilled with the diversity of ideas from all the finalists and can see their passion for making a real impact in natural disaster response through new and improved aviation systems,” said Steven Holz, NASA Aeronautics University Innovation Assistant Project Manager and Blue Skies judge and co-chair. “We look forward to seeing their final papers, infographics, and hearing their final presentations at the forum.”
The 2024 Gateways to Blue Skies: Advancing Aviation for Natural Disasters finalist projects represent diverse natural disaster response types, including earthquakes, avalanches, volcanic eruptions, hurricanes, floods, and wildfires:
Boston University
Deployable Unmanned Aerial System to Detect and Map Volcanic Ash Clouds
Advisor: James Geiger
Boston University
Rapid Evaluation, Coordination, Observation, Verification & Environmental Reporting (RECOVER)
Advisor: Dr. Anthony Linn
Bowie State University
Enhancing Earthquake Disaster Relief with Artificial Intelligence and Machine Learning
Advisor: Dr. Haydar Teymourlouei
California State Polytechnic University, Pomona
Aero-Quake Emergency Response Network
Advisor: Mark Gonda
Cerritos College
F.I.R.E. (Fire Intervention Retardant Expeller)
Advisor: Janet McLarty-Schroeder
Columbia University
AVATARS: Aerial Vehicles for Avalanche Terrain Assessment and Reporting Systems
Faculty Advisor: Dr. Mike Massimino
North Carolina State University
Reconnaissance and Emergency Aircraft for Critical Hurricane Relief (REACHR)
Advisor: Dr. Felix Ewere
University of Texas, Austin
Data Integrated UAV for Wildfire Management
Advisor: Dr. Christian Claudel
As climate change increasingly influences the frequency and severity of natural disasters on a global scale, opportunities to contribute at the intersection of technological advancement, aviation, and natural disasters grow in both number and importance. NASA Aeronautics is dedicated to expanding its efforts to assist commercial, industry, and government partners in advancing aviation-related systems that could help prepare for natural disasters, lessen their impacts, and speed up recovery efforts.
The eight finalist teams each receive $8,000 stipends to facilitate full participation in the Gateways to Blue Skies Forum, which will be held in May in Mountain View and will be livestreamed globally. Winning team members earn a chance to intern at one of NASA’s Aeronautics centers in the 2024-25 academic year.
The 2024 Gateways to Blue Skies competition is sponsored by NASA’s Aeronautics Research Mission Directorate’s (ARMD’s) University Innovation Project (UI) and is managed by the National Institute of Aerospace (NIA).
For more on the Gateways to Blues Skies: Advancing Aviation for Natural Disasters competition, visit https://blueskies.nianet.org.
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Last Updated Mar 26, 2024 Related Terms
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