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It's a very big universe out there, and an astronomer's work is never done when it comes to simply counting and cataloging the sheer number of stars in the heavens. Completing a seven-year effort at digitizing the entire sky for a second time, astronomers at the Space Telescope Science Institute and the Osservatorio Astronomico di Torino are releasing the Guide Star Catalog II. This new version, which replaces the historic 1989 catalog, provides important information on nearly one-half billion stars - over 20 times as many as the original Guide Star Catalog.

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    • By NASA
      JPL Director Laurie Leshin, flanked by a model of the Voyager spacecraft and an image of Ed Stone, addresses the audience during the unveiling of the Dr. Edward Stone Exploration Trail on Dec. 6, 2024, at the lab. Ed Stone Memorial Plaque Dedication Ceremony Requester: Susie Woodall Date: 06-DEC-2024 Photographer: Ryan Lannom A series of plaques stretching through the heart of the agency’s Jet Propulsion Laboratory offers highlights of the space explorer’s career and the Voyager mission he led.
      Family members, colleagues, and local dignitaries gathered on Friday, Dec. 6, at NASA’s Jet Propulsion Laboratory in Southern California for the unveiling of a memorial honoring Ed Stone, best known as the longtime project scientist of the agency’s Voyager mission. Stone died in June 2024 at age 88 after leading the mission for half a century and leading JPL for a decade.
      Stretching through the heart of the lab, the Dr. Edward Stone Exploration Trail traces the arc of Stone’s distinguished career and the long journeys of the twin Voyager space probes. Designed with simple line drawings, 24 disc-shaped plaques along the trail offer career and mission highlights while evoking the Golden Record aboard both spacecraft.
      The Dr. Edward Stone Exploration Trail begins in front of the building where Stone served as JPL’s director. NASA/JPL-Caltech Launched in the summer of 1977, Voyager 1 and 2 have since traveled more than 15.4 billion and 12.9 billion miles (24 billion and 20 billion kilometers), respectively — farther than any other human-made object. The plaques trace their trajectories to Jupiter and Saturn as well as their diverging paths, with Voyager 2 heading toward Uranus and Neptune as Voyager 1 made a beeline for interstellar space. Other stops along the trail honor Stone’s work creating the W.M. Keck Observatory in 1985, his appointment as JPL’s director in 1991, and his being honored with the Distinguished Service Award 2013.
      “To follow in the footsteps of Ed Stone is to walk the path of an extraordinary person who dedicated his time on Earth to reaching for the stars, and who paved the way for others to do the same,” said Laurie Leshin, director of JPL. “This trail is a testament to Ed’s bold curiosity, visionary leadership, and passion for science that have enabled us to explore farther into the cosmos than ever before. It’s also a reminder of his influence on so many of our endeavors to reach new frontiers in space.”
      Embedded in the pavement, 24 additional plaques trace the approximate trajectories of the Voyager spacecraft. The shape and design language of the plaques evoke the design of the Gold Record.NASA/JPL-Caltech Blazing a Trail
      Stone’s penchant for walking was one of the topics that came up when members of JPL’s Office of the Director, its DesignLab, and the Voyager team began discussing ways to honor his outsize contributions to JPL and science. From those initial brainstorming sessions came the question, “How can we do something to memorialize him at JPL that gets people to walk?” recalled DesignLab’s graphic manager, Lauren Shapiro.
      The distances between the plaques are roughly proportional the distances between the events they highlight, and the team even tried to make flight trajectories of the probes as accurate as possible, given the challenges of avoiding buildings and the like.
      Designer Kaelyn Richards relied on the Voyager Golden Record as a guide for the visual language. “I referenced a lot of old scientific diagrams that were made by artists in the ’70s and ’80s, and I used a solar system modeling program to show the exact position of the planets on the day that the ‘Pale Blue Dot’ was taken,” she said, referring to the plaque honoring the famous 1990 image Voyager 1 took of Earth from beyond Neptune.
      “Everyone seemed to agree that Voyager was Ed Stone. Yes, he did so much more, but this was really his biggest legacy,” Shapiro said. “So we’re honoring both the mission and the person alongside each other. And they both, in a poetic way, have had very long, incredible lives.”
      Voyager 1 and 2 both carry the Golden Record, a 12-inch gold-plated copper disk intended to communicate a story of our world to extraterrestrials with sounds and images that portray the diversity of life and culture on Earth. NASA/JPL-Caltech After retiring as Voyager’s project scientist, Stone returned to teaching and research at Caltech, which manages JPL for NASA.
      Before attending the unveiling, Caltech President Thomas Rosenbaum said, “Ed was a whirlwind of activity. I have many good memories of running after Ed in the midst of conversation as he charged across campus. Ed’s ambition, drive, and vision were accompanied by his warmth, humility, and commitment to Caltech and our students. He served as a mentor for generations of scholars who have gone on to be leaders in their fields. He conveyed a curiosity and a thirst for discovery that inspired.”
      Stone had joined the Caltech faculty as an assistant professor in 1967 and, from 1983 to 1988, chaired the Division of Physics, Mathematics and Astronomy. He went on to serve as vice president for astronomical facilities from 1988 to 1990 and as vice provost for special projects from 2004 to 2022. In 2023, Caltech established a new faculty position, the Edward C. Stone Professorship.
      But there was another academic honor that Stone also cherished: the 2012 naming of the Edward Stone Middle School in his hometown of Burlington, Iowa. A short walk from the plaque marking that milestone is the final stop of the Exploration Trail, its simple inscription reading: “Ed Stone’s leadership and pursuit of scientific knowledge expanded humanity’s understanding of the universe. His legacy lives on through the Voyager mission, and the countless people he has inspired.”
      News Media Contacts
      Matthew Segal / Calla Cofield
      Jet Propulsion Laboratory, Pasadena, Calif.
      818-354-8307 / 626-808-2469
      matthew.j.segal@jpl.nasa.gov / calla.e.cofield@jpl.nasa.gov
      2024-165
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      Last Updated Dec 06, 2024 Related Terms
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    • By NASA
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      The stars that set their cloudy birthplaces aglow are comparatively short-lived, and many of these stars will explode as supernovae just a few million years after they’re born. In 1999, NGC 1637 played host to a supernova named SN 1999EM, lauded as the brightest supernova seen that year. When a massive star expires as a supernova, the explosion outshines its entire home galaxy for a short time. While a supernova marks the end of a star’s life, it can also jump start the formation of new stars by compressing nearby clouds of gas, beginning the stellar lifecycle anew.
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      NASA’s Goddard Space Flight Center, Greenbelt, MD
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      Last Updated Dec 05, 2024 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms
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    • By NASA
      ESA/Hubble & NASA, M. Sun The spiral galaxy in this NASA/ESA Hubble Space Telescope image is IC 3225. It looks remarkably as if it was launched from a cannon, speeding through space like a comet with a tail of gas streaming from its disk behind it. The scenes that galaxies appear in from Earth’s point of view are fascinating; many seem to hang calmly in the emptiness of space as if hung from a string, while others star in much more dynamic situations!
      Appearances can be deceiving with objects so far from Earth — IC 3225 itself is about 100 million light-years away — but the galaxy’s location suggests some causes for this active scene, because IC 3225 is one of over 1,300 members of the Virgo galaxy cluster. The density of galaxies in the Virgo cluster creates a rich field of hot gas between them, called ‘intracluster medium’, while the cluster’s extreme mass has its galaxies careening around its center in some very fast orbits. Ramming through the thick intracluster medium, especially close to the cluster’s center, places enormous ‘ram pressure’ on the moving galaxies that strips gas out of them as they go.
      As a galaxy moves through space, the gas and dust that make up the intracluster medium create resistance to the galaxy’s movement, exerting pressure on the galaxy. This pressure, called ram pressure, can strip a galaxy of its star-forming gas and dust, reducing or even stopping the creation of new stars. Conversely, ram pressure can also cause other parts of the galaxy to compress, which can boost star formation. IC 3225 is not so close to the cluster core right now, but astronomers have deduced that it has undergone ram pressure stripping in the past. The galaxy looks compressed on one side, with noticeably more star formation on that leading edge (bottom-left), while the opposite end is stretched out of shape (upper-right). Being in such a crowded field, a close call with another galaxy may also have tugged on IC 3225 and created this shape. The sight of this distorted galaxy is a reminder of the incredible forces at work on astronomical scales, which can move and reshape entire galaxies!
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    • By NASA
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      Hubble Sees a Celestial Cannonball
      This NASA/ESA Hubble Space Telescope image features the spiral galaxy IC 3225. ESA/Hubble & NASA, M. Sun The spiral galaxy in this NASA/ESA Hubble Space Telescope image is IC 3225. It looks remarkably as if it was launched from a cannon, speeding through space like a comet with a tail of gas streaming from its disk behind it. The scenes that galaxies appear in from Earth’s point of view are fascinating; many seem to hang calmly in the emptiness of space as if hung from a string, while others star in much more dynamic situations!
      Appearances can be deceiving with objects so far from Earth — IC 3225 itself is about 100 million light-years away — but the galaxy’s location suggests some causes for this active scene, because IC 3225 is one of over 1,300 members of the Virgo galaxy cluster. The density of galaxies in the Virgo cluster creates a rich field of hot gas between them, called ‘intracluster medium’, while the cluster’s extreme mass has its galaxies careening around its center in some very fast orbits. Ramming through the thick intracluster medium, especially close to the cluster’s center, places enormous ‘ram pressure’ on the moving galaxies that strips gas out of them as they go.
      As a galaxy moves through space, the gas and dust that make up the intracluster medium create resistance to the galaxy’s movement, exerting pressure on the galaxy. This pressure, called ram pressure, can strip a galaxy of its star-forming gas and dust, reducing or even stopping the creation of new stars. Conversely, ram pressure can also cause other parts of the galaxy to compress, which can boost star formation. IC 3225 is not so close to the cluster core right now, but astronomers have deduced that it has undergone ram pressure stripping in the past. The galaxy looks compressed on one side, with noticeably more star formation on that leading edge (bottom-left), while the opposite end is stretched out of shape (upper-right). Being in such a crowded field, a close call with another galaxy may also have tugged on IC 3225 and created this shape. The sight of this distorted galaxy is a reminder of the incredible forces at work on astronomical scales, which can move and reshape entire galaxies!
      Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Media Contact:
      Claire Andreoli
      NASA’s Goddard Space Flight Center, Greenbelt, MD
      claire.andreoli@nasa.gov
      Share








      Details
      Last Updated Oct 24, 2024 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms
      Astrophysics Astrophysics Division Galaxies Goddard Space Flight Center Hubble Space Telescope The Universe Keep Exploring Discover More Topics From NASA
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    • By NASA
      NASA’s work, including its Moon to Mars exploration approach, is advancing science and technology for the Artemis Generation, while also driving significant economic growth across the United States, the agency announced Thursday.
      In its third agencywide economic impact report, NASA highlighted how its Moon to Mars activities, climate change research and technology development, and other projects generated more than $75.6 billion in economic output across all 50 states and Washington, D.C., in fiscal year 2023.
      “To invest in NASA is to invest in American workers, American innovation, the American economy, and American economic competitiveness,” says NASA Administrator Bill Nelson. “Our work doesn’t just expand our understanding of the universe — it fuels economic growth, inspires future generations, and improves our quality of life. As we embark on the next great chapter of exploration, we are proud to help power economic strength, job creation, scientific progress, and American leadership on Earth, in the skies, and in the stars.”
      Combined, NASA’s missions supported 304,803 jobs nationwide, and generated an estimated $9.5 billion in federal, state, and local taxes throughout the United States.
      The study found NASA’s Moon to Mars activities generated more than $23.8 billion in total economic output and supported an estimated 96,479 jobs nationwide. For investments in climate research and technology, the agency’s activities generated more than $7.9 billion in total economic output and supported an estimated 32,900 jobs in the U.S.


      Additional key findings of the study include:
      Every state in the country benefits economically through NASA activities. Forty-five states have an economic impact of more than $10 million. Of those 45 states, eight have an economic impact of $1 billion or more. The agency’s Moon to Mars initiative, which includes the Artemis missions, generated nearly $2.9 billion in tax revenue. These activities provided about 32% of NASA’s economic impact. The agency’s investments in climate change research and technology generated more than $1 billion in tax revenue. Approximately 11% of NASA’s economic impacts are attributable to its investments in climate change research and technology.     NASA had more than 644 active international agreements for various scientific research and technology development activities in the 2023 fiscal year. The International Space Station, representing 15 countries and five space agencies, has a predominant role in the agency’s international partnerships. In fiscal year 2023, NASA oversaw 2,628 active domestic and international non-procurement partnership agreements, which included 629 new domestic and 109 new international agreements, active partnerships with 587 different non-federal  partners across the U.S., and partnerships in 47 of 50 states.  NASA Spinoffs, which are public products and processes that are developed with NASA technology, funding, or expertise, provide a benefit to American lives beyond dollars and jobs. As of result of NASA missions, our fiscal year 2023 tech transfer activities produced 1,564 new technology reports, 40 new patent applications, 69 patents issued, and established 5,277 software usage agreements.  Scientific research and development, which fuels advancements in science and technology that can help improve daily life on Earth and for humanity, is the largest single-sector benefitting from NASA’s work, accounting for 19% of NASA’s total economic impact. The study was conducted by the Nathalie P. Voorhees Center for Neighborhood and Community Improvement at the University of Illinois at Chicago.
      To review the full report, visit:
      https://go.nasa.gov/3NEtUIq
      -end-
      Meira Bernstein / Melissa Howell
      Headquarters, Washington
      202-615-1747 / 202-961-6602
      meira.b.bernstein@nasa.gov / melissa.e.howell@nasa.gov

      Share
      Details
      Last Updated Oct 24, 2024 LocationNASA Headquarters View the full article
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