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By Space Force
NMM introduces the Total Force to a series of panels, events and interactive discussions on mentoring as an enterprise imperative, ensuring greater awareness of the mentoring opportunities available to all Airman and Guardians.
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By NASA
Credit: NASA With Finland’s signing of the Artemis Accords on Tuesday, NASA celebrates the 53rd nation committing to the safe and responsible exploration of space that benefits humanity. The signing ceremony took place on the margins of the Aalto University’s Winter Satellite Workshop 2025 in Espoo, Finland.
“Today, Finland is joining a community of nations that want to share scientific data freely, operate safely, and preserve the space environment for the Artemis Generation,” said NASA Associate Administrator Jim Free, who provided pre-recorded virtual remarks for the ceremony. “By signing the Artemis Accords, Finland builds on its rich history in space, excelling in science, navigation, and Earth observation. Forging strong partnerships between our nations and among the international community is critical for advancing our shared space exploration goals.”
Wille Rydman, Finland’s minister of economic affairs, signed the Artemis Accords in front of an audience of Finnish space officials and workshop attendees.
“Finland has been part of the space exploration community for decades with innovations and technology produced by Finnish companies and research institutions,” said Rydman. “The signing of the Artemis Accords is in line with Finland’s newly updated space strategy that highlights the importance of international cooperation and of strengthening partnerships with the Unites States and other allies. We aim for this cooperation to open great opportunities for the Finnish space sector in the new era of space exploration and in the Artemis program.”
NASA and Finland have a long history of collaboration, and most recently, Finland is contributing to the upcoming Intuitive Machines-2 delivery to the Moon under NASA’s Artemis campaign and CLPS (Commercial Lunar Payload Services) initiative. Intuitive Machines will deliver a lunar LTE/4G communications system developed by Finnish company, Nokia. Its U.S. subsidiary, Nokia of America, was selected as part of NASA’s Tipping Point opportunity through the agency’s Space Technology Mission Directorate, to advance a lunar surface communications system that could help humans and robots explore more of the Moon than ever before.
The Finnish Meteorological Institute also provided the pressure and humidity measurement instruments for the Environmental Monitoring Station instrument suite aboard the Curiosity Rover, operating on Mars now.
In 2020, the United States, led by NASA and the U.S. Department of State, and seven other initial signatory nations established the Artemis Accords, a set of principles promoting the beneficial use of space for humanity.
The Artemis Accords are grounded in the Outer Space Treaty and other agreements including the Registration Convention, the Rescue and Return Agreement, as well as best practices for responsible behavior that NASA and its partners have supported, including the public release of scientific data.
Learn more about the Artemis Accords at:
https://www.nasa.gov/artemis-accords
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Kathryn Hambleton / Elizabeth Shaw
Headquarters, Washington
202-358-1600
kathryn.a.hambleton@nasa.gov / elizabeth.a.shaw@nasa.gov
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Last Updated Jan 21, 2025 LocationNASA Headquarters Related Terms
artemis accords NASA Headquarters Office of International and Interagency Relations (OIIR) View the full article
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By NASA
Teams with NASA are gaining momentum as work progresses toward future lunar missions for the benefit of humanity as numerous flight hardware shipments from across the world arrived at the agency’s Kennedy Space Center in Florida for the first crewed Artemis flight test and follow-on lunar missions. The skyline at Kennedy will soon see added structures as teams build up the ground systems needed to support them.
Crews are well underway with parallel preparations for the Artemis II flight, as well as buildup of NASA’s mobile launcher 2 tower for use during the launch of the SLS (Space Launch System) Block 1B rocket, beginning with the Artemis IV mission. This version of NASA’s rocket will use a more powerful upper stage to launch with crew and more cargo on lunar missions. Technicians have begun upper stage umbilical connections testing that will help supply fuel and other commodities to the rocket while at the launch pad.
In summer 2024, technicians from NASA and contractor Bechtel National, Inc. completed a milestone called jack and set, where the center’s mega-mover, the crawler transporter, repositioned the initial steel base assembly for mobile launcher 2 from temporary construction shoring to its six permanent pedestals near the Kennedy’s Vehicle Assembly Building.
Teams at Bechtel National, Inc. use a crane to lift Module 4 into place atop the mobile launcher 2 tower chair at its park site on Jan. 3, 2025, at Kennedy Space Center in Florida. Module 4 is the first of seven modules that will be stacked vertically to make up the almost 400-foot launch tower that will be used beginning with the Artemis IV mission.Betchel National Inc./Allison Sijgers “The NASA Bechtel mobile launcher 2 team is ahead of schedule and gaining momentum by the day,” stated Darrell Foster, ground systems integration manager, NASA’s Exploration Ground Systems Program at NASA Kennedy. “In parallel to all of the progress at our main build site, the remaining tower modules are assembled and outfitted at a second construction site on center.”
As construction of the mobile launcher 2’s base continues, the assembly operations shift into integration of the modules that will make up the tower. In mid-October 2024, crews completed installation of the chair, named for its resemblance to a giant seat. The chair serves as the interface between the base deck and the vertical modules which are the components that will make up the tower, and stands at 80-feet-tall.
In December 2024, teams completed the rig and set Module 4 operation where the first of a total of seven 40-foot-tall modules was stacked on top of the chair. Becthel crews rigged the module to a heavy lift crane, raised the module more than 150-feet, and secured the four corners to the tower chair. Once complete, the entire mobile launcher structure will reach a height of nearly 400 feet – approximately the length of four Olympic-sized swimming pools placed end-to-end.
On the opposite side of the center, test teams at the Launch Equipment Test Facility are testing the new umbilical interfaces, which will be located on mobile launcher 2, that will be needed to support the new SLS Block 1B Exploration Upper Stage. The umbilicals are connecting lines that provide fuel, oxidizer, pneumatic pressure, instrumentation, and electrical connections from the mobile launcher to the upper stage and other elements of SLS and NASA’s Orion spacecraft.
“All ambient temperature testing has been successfully completed and the team is now beginning cryogenic testing, where liquid nitrogen and liquid hydrogen will flow through the umbilicals to verify acceptable performance,” stated Kevin Jumper, lab manager, NASA Launch Equipment Test Facility at Kennedy. “The Exploration Upper Stage umbilical team has made significant progress on check-out and verification testing of the mobile launcher 2 umbilicals.”
https://www.nasa.gov/wp-content/uploads/2025/01/eusu-test-3-5b-run-1.mp4 Exploration Upper Stage Umbilical retract testing is underway at the Launch Equipment Test Facility at Kennedy Space Center in Florida on Oct. 22, 2024. The new umbilical interface will be used beginning with the Artemis IV mission. Credit: LASSO Contract LETF Video Group The testing includes extension and retraction of the Exploration Upper Stage umbilical arms that will be installed on mobile launcher 2. The test team remotely triggers the umbilical arms to retract, ensuring the ground and flight umbilical plates separate as expected, simulating the operation that will be performed at lift off.
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By Space Force
Space Launch Delta 45 supported the maiden flight for Blue Origin’s New Glenn from Space Launch Complex 36 at Cape Canaveral Space Force Station.
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By NASA
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 Online Activities Lithographs Fact Sheets Glossary Posters Hubble on the NASA App More 35th Anniversary 4 Min Read NASA’s Hubble Tracks Down a ‘Blue Lurker’ Among Stars
Evolution of a “Blue Lurker” Star in a Triple System Credits:
NASA, ESA, Leah Hustak (STScI) The name “blue lurker” might sound like a villainous character from a superhero movie. But it is a rare class of star that NASA’s Hubble Space Telescope explored by looking deeply into the open star cluster M67, roughly 2,800 light-years away.
Forensics with Hubble data show that the star has had a tumultuous life, mixing with two other stars gravitationally bound together in a remarkable triple-star system. The star has a kinship to so-called “blue stragglers,” which are hotter, brighter, and bluer than expected because they are likely the result of mergers between stars.
Evolution of a “Blue Lurker” Star in a Triple System Panel 1: A triple star system containing three Sun-like stars. Two are very tightly orbiting. The third star has a much wider orbit. Panel 2: The close stellar pair spiral together and merge to form one more massive star. Panel 3: The merged star evolves into a giant star. As the huge photosphere expands, some of the material falls onto the outer companion, causing the companion to grow larger and its rotation rate to increase. Panels 4-5: The central merged star eventually burns out and forms a massive white dwarf, and the outer companion spirals in towards the white dwarf, leaving a binary star system with a tighter orbit. Panel 6: The surviving outer companion is much like our Sun but nicknamed a “blue lurker.” Although it is slightly brighter bluer than expected because of the earlier mass-transfer from the central star and is now rotating very rapidly, these features are subtle. The star could easily be mistaken for a normal Sun-like star despite its exotic evolutionary history. NASA, ESA, Leah Hustak (STScI) The blue lurker is spinning much faster than expected, an unusual behavior that led to its identification. Otherwise it looks like a normal Sun-like star. The term “blue” is a bit of a misnomer because the star’s color blends in with all the other solar-mass stars in the cluster. Hence it is sort of “lurking” among the common stellar population.
The spin rate is evidence that the lurker must have siphoned in material from a companion star, causing its rotation to speed up. The star’s high spin rate was discovered with NASA’s retired Kepler space telescope. While normal Sun-like stars typically take about 30 days to complete one rotation, the lurker takes only four days.
How the blue lurker got that way is a “super complicated evolutionary story,” said Emily Leiner of Illinois Institute of Technology in Chicago. “This star is really exciting because it’s an example of a star that has interacted in a triple-star system.” The blue lurker originally rotated more slowly and orbited a binary system consisting of two Sun-like stars.
Around 500 million years ago, the two stars in that binary merged, creating a single, much more massive star. This behemoth soon swelled into a giant star, dumping some of its own material onto the blue lurker and spinning it up in the process. Today, we observe that the blue lurker is orbiting a white dwarf star — the burned out remains of the massive merger.
“We know these multiple star systems are fairly common and are going to lead to really interesting outcomes,” Leiner explained. “We just don’t yet have a model that can reliably connect through all of those stages of evolution. Triple-star systems are about 10 percent of the Sun-like star population. But being able to put together this evolutionary history is challenging.”
Hubble observed the white dwarf companion star that the lurker orbits. Using ultraviolet spectroscopy, Hubble found the white dwarf is very hot (as high as 23,000 degrees Fahrenheit, or roughly three times the Sun’s surface temperature) and a heavyweight at 0.72 solar masses. According to theory, hot white dwarfs in M67 should be only about 0.5 solar masses. This is evidence that the white dwarf is the byproduct of the merger of two stars that once were part of a triple-star system.
“This is one of the only triple systems where we can tell a story this detailed about how it evolved,” said Leiner. “Triples are emerging as potentially very important to creating interesting, explosive end products. It’s really unusual to be able to put constraints on such a system as we are exploring.”
Leiner’s results are being presented at the 245th meeting of the American Astronomical Society in Washington, D.C.
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, also supports mission operations at Goddard. The Space Telescope Science Institute in Baltimore, which is operated by the Association of Universities for Research in Astronomy, conducts Hubble science operations for NASA.
Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Media Contact:
Claire Andreoli (claire.andreoli@nasa.gov)
NASA’s Goddard Space Flight Center, Greenbelt, MD
Ray Villard
Space Telescope Science Institute, Baltimore, MD
Science Contact:
Emily Leiner
Illinois Institute of Technology, Chicago, IL
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Last Updated Jan 13, 2025 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms
Astrophysics Astrophysics Division Goddard Space Flight Center Hubble Space Telescope Open Clusters Stars 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.
Hubble Science Highlights
Hubble’s Night Sky Challenge
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