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Some Planetary Nebulae Have Bizarre Alignment to Our Galaxy
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By NASA
ESA/Hubble & NASA, O. Fox, L. Jenkins, S. Van Dyk, A. Filippenko, J. Lee and the PHANGS-HST Team, D. de Martin (ESA/Hubble), M. Zamani (ESA/Hubble) This NASA/ESA Hubble Space Telescope image features NGC 1672, a barred spiral galaxy located 49 million light-years from Earth in the constellation Dorado. This galaxy is a multi-talented light show, showing off an impressive array of different celestial lights. Like any spiral galaxy, shining stars fill its disk, giving the galaxy a beautiful glow. Along its two large arms, bubbles of hydrogen gas shine in a striking red light fueled by radiation from infant stars shrouded within. Near the galaxy’s center are some particularly spectacular stars embedded within a ring of hot gas. These newly formed and extremely hot stars emit powerful X-rays. Closer in, at the galaxy’s very center, sits an even brighter source of X-rays, an active galactic nucleus. This X-ray powerhouse makes NGC 1672 a Seyfert galaxy. It forms as a result of heated matter swirling in the accretion disk around NGC 1672’s supermassive black hole.
See more images of NGC 1672.
Image credit: ESA/Hubble & NASA, O. Fox, L. Jenkins, S. Van Dyk, A. Filippenko, J. Lee and the PHANGS-HST Team, D. de Martin (ESA/Hubble), M. Zamani (ESA/Hubble)
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By NASA
Hubble Space Telescope Home Hubble Captures a Galaxy with… Missions 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 Captures a Galaxy with Many Lights
This NASA/ESA Hubble Space Telescope image captures the spiral galaxy NGC 1672 with a supernova. ESA/Hubble & NASA, O. Fox, L. Jenkins, S. Van Dyk, A. Filippenko, J. Lee and the PHANGS-HST Team, D. de Martin (ESA/Hubble), M. Zamani (ESA/Hubble)
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This NASA/ESA Hubble Space Telescope image features NGC 1672, a barred spiral galaxy located 49 million light-years from Earth in the constellation Dorado. This galaxy is a multi-talented light show, showing off an impressive array of different celestial lights. Like any spiral galaxy, shining stars fill its disk, giving the galaxy a beautiful glow. Along its two large arms, bubbles of hydrogen gas shine in a striking red light fueled by radiation from infant stars shrouded within. Near the galaxy’s center are some particularly spectacular stars embedded within a ring of hot gas. These newly formed and extremely hot stars emit powerful X-rays. Closer in, at the galaxy’s very center, sits an even brighter source of X-rays, an active galactic nucleus. This X-ray powerhouse makes NGC 1672 a Seyfert galaxy. It forms as a result of heated matter swirling in the accretion disk around NGC 1672’s supermassive black hole.
Image Before/After Along with its bright young stars and X-ray core, a highlight of this image is the most fleeting and temporary of lights: a supernova, visible in just one of the six Hubble images that make up this composite. Supernova SN 2017GAX was a Type I supernova caused by the core-collapse and subsequent explosion of a giant star that went from invisible to a new light in the sky in just a matter of days. In the image above, the supernova is already fading and is visible as a small green dot just below the crook of the spiral arm on the right side. Astronomers wanted to look for any companion star that the supernova progenitor may have had — something impossible to spot beside a live supernova — so they purposefully captured this image of the fading supernova.
Recently, NGC 1672 was also among a crop of galaxies imaged with the NASA/ESA/CSA James Webb Space Telescope, showing the ring of gas and the structure of dust in its spiral arms. The image below compares the Webb image with Hubble’s image.
Image Before/After 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 08, 2024 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms
Astrophysics Astrophysics Division Galaxies Goddard Space Flight Center Hubble Space Telescope Missions Spiral Galaxies Stars Supernovae The Universe 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.
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By NASA
5 min read
30 Years On, NASA’s Wind Is a Windfall for Studying our Neighborhood in Space
An artist’s concept of NASA’s Wind spacecraft outside of Earth’s magnetosphere. NASA Picture it: 1994. The first World Wide Web conference took place in Geneva, the first Chunnel train traveled under the English Channel, and just three years after the end of the Cold War, the first Russian instrument on a U.S. spacecraft launched into deep space from Cape Canaveral. The mission to study the solar wind, aptly named Wind, held promise for heliophysicists and astrophysicists around the world to investigate basic plasma processes in the solar wind barreling toward Earth —key information for helping us understand and potentially mitigate the space weather environment surrounding our home planet.
Thirty years later, Wind continues to deliver on that promise from about a million miles away at the first Earth-Sun Lagrange Point (L1). This location is gravitationally balanced between Earth and the Sun, providing excellent fuel economy that requires mere puffs of thrust to stay in place.
According to Lynn Wilson, who is the Wind project scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, fuel is only one indicator of Wind’s life expectancy, however. “Based on fuel alone, Wind can continue flying until 2074,” he said. “On the other hand, its ability to return data hinges on the last surviving digital tape recorder onboard.”
An artist’s concept shows a closeup of the Wind spacecraft. NASA Wind launched with two digital tape recorders to record data from all the instruments on the spacecraft and provide reports on the spacecraft’s thermal conditions, orientation, and overall health. Each recorder has two tape decks, A and B, which Wilson affectionately refers to as “fancy eight-tracks.”
After six years of service, the first digital tape recorder failed in 2000 along with its two tape decks, forcing mission operators to switch to the second one. Tape Deck A on that one started showing signs of wear in 2016, so the mission operators now use Tape Deck B as the primary deck, with A as a backup.
“They built redundancy into the digital tape recorder system by building two of them, but you can never predict how technology will perform when it’s a million miles away, bathing in ionizing radiation,” said Wilson. “We’re fortunate that after 30 years, we still have two functioning tape decks.”
Wind launched on Nov. 1, 1994, on a Delta IV rocket from Cape Canaveral Air Force Station in Florida. NASA Bonus Science
When Wind launched on Nov. 1, 1994, nobody could have possibly predicted that exactly 30 years later, NASA would be kicking off “Bonus Science” month in the Heliophysics Big Year. Beyond the mission’s incredible track record of mesmerizing discoveries about the solar wind — some detailed on its 25th anniversary — Wind continues to deliver with bonus science abound.
Opportunity and Collaborative Discovery
Along its circuitous journey to L1, Wind dipped in and out of Earth’s magnetosphere more than 65 times, capturing the largest whistler wave — a low-frequency radio wave racing across Earth’s magnetic field — ever recorded in Earth’s Van Allen radiation belts. Wind also traveled ahead of and behind Earth — about 150 times our planet’s diameter in both directions, informing potential future missions that would operate in those areas with extreme exposure to the solar wind. It even took a side quest to the Moon, cruising through the lunar wake, a shadow devoid of solar wind on the far side of the Moon.
Later, from its permanent home at L1, Wind was among several corroborating spacecraft that helped confirm what scientists believe is the brightest gamma-ray burst to occur since the dawn of human civilization. The burst, GRB 221009A, was first detected by NASA’s Fermi Gamma-ray Space Telescope in October 2022. Although not in its primary science objectives, Wind carries two bonus instruments designed to observe gamma-ray bursts that helped scientists confirm the burst’s origin in the Sagitta constellation.
Academic Inspiration
More than 7,200 research papers have been published using Wind data, and the mission has supported more than 100 graduate and post-graduate degrees.
Wilson was one of those degree candidates. When Wind launched, Wilson was in sixth grade, on the football, baseball, and wrestling teams, with spare time spent playing video games and reading science fiction. He had a knack for science and considered becoming a medical doctor or an engineer before committing to his love of physics, which ultimately led to his current position as Wind’s project scientist. While pursuing his doctorate, he worked with Adam Szabo who was the Wind project scientist at NASA Goddard at the time and used Wind data to study interplanetary collisionless shock waves. Szabo eventually hired Wilson to work on the Wind mission team at Goddard.
Also in sixth grade at the time, Joe Westlake, NASA Heliophysics division director,was into soccer and music, and was a voracious reader consumed with Tolkein’s stories about Middle Earth. Now he leads the NASA office that manages Wind.
“It’s amazing to think that Lynn Wilson and I were in middle school, and the original mission designers and scientists have long since retired,” said Westlake. “When a mission makes it to 30 years, you can’t help but be inspired by the role it has played not only in scientific discovery, but in the careers of multiple generations of scientists.”
By Erin Mahoney
NASA Headquarters, Washington
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Last Updated Nov 01, 2024 Related Terms
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By European Space Agency
Stare deeply at these galaxies. They appear as if blood is pumping through the top of a flesh-free face. The long, ghastly ‘stare’ of their searing eye-like cores shines out into the supreme cosmic darkness.
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By NASA
5 Min Read ‘Blood-Soaked’ Eyes: NASA’s Webb, Hubble Examine Galaxy Pair
This observation combines mid-infrared light from NASA’s James Webb Space Telescope, and ultraviolet and visible light from NASA’s Hubble Space Telescope. The galaxies grazed one another millions of years ago. The smaller spiral on the left, cataloged as IC 2163, passed behind NGC 2207, the larger spiral galaxy at right. Credits:
NASA, ESA, CSA, STScI Stare deeply at these galaxies. They appear as if blood is pumping through the top of a flesh-free face. The long, ghastly “stare” of their searing eye-like cores shines out into the supreme cosmic darkness.
It’s good fortune that looks can be deceiving.
These galaxies have only grazed one another to date, with the smaller spiral on the left, cataloged as IC 2163, ever so slowly “creeping” behind NGC 2207, the spiral galaxy at right, millions of years ago.
The pair’s macabre colors represent a combination of mid-infrared light from NASA’s James Webb Space Telescope with visible and ultraviolet light from NASA’s Hubble Space Telescope.
Image A: Galaxies IC 2163 and NGC 2207 (Webb and Hubble Image)
This observation combines mid-infrared light from NASA’s James Webb Space Telescope, and ultraviolet and visible light from NASA’s Hubble Space Telescope. The galaxies grazed one another millions of years ago. The smaller spiral on the left, cataloged as IC 2163, passed behind NGC 2207, the larger spiral galaxy at right. NASA, ESA, CSA, STScI Look for potential evidence of their “light scrape” in the shock fronts, where material from the galaxies may have slammed together. These lines represented in brighter red, including the “eyelids,” may cause the appearance of the galaxies’ bulging, vein-like arms.
The galaxies’ first pass may have also distorted their delicately curved arms, pulling out tidal extensions in several places. The diffuse, tiny spiral arms between IC 2163’s core and its far left arm may be an example of this activity. Even more tendrils look like they’re hanging between the galaxies’ cores. Another extension “drifts” off the top of the larger galaxy, forming a thin, semi-transparent arm that practically runs off screen.
Image B: Galaxies IC 2163 and NGC 2207 (MIRI Image)
This mid-infrared image from NASA’s James Webb Space Telescope excels at showing where the cold dust, set off in white, glows throughout these two galaxies, IC 2163 and NGC 2207. The telescope also helps pinpoint where stars and star clusters are buried within the dust. These regions are bright pink. Some of the pink dots may be extremely distant active supermassive black holes known as quasars. NASA, ESA, CSA, STScI Both galaxies have high star formation rates, like innumerable individual hearts fluttering all across their arms. Each year, the galaxies produce the equivalent of two dozen new stars that are the size of the Sun. Our Milky Way galaxy only forms the equivalent of two or three new Sun-like stars per year. Both galaxies have also hosted seven known supernovae in recent decades, a high number compared to an average of one every 50 years in the Milky Way. Each supernova may have cleared space in their arms, rearranging gas and dust that later cooled, and allowed many new stars to form.
To spot the star-forming “action sequences,” look for the bright blue areas captured by Hubble in ultraviolet light, and pink and white regions detailed mainly by Webb’s mid-infrared data. Larger areas of stars are known as super star clusters. Look for examples of these in the top-most spiral arm that wraps above the larger galaxy and points left. Other bright regions in the galaxies are mini starbursts — locations where many stars form in quick succession. Additionally, the top and bottom “eyelid” of IC 2163, the smaller galaxy on the left, is filled with newer star formation and burns brightly.
Image C: Galaxies IC 2163 and NGC 2207 (Hubble and Webb Images Side by Side)
Image Before/After What’s next for these spirals? Over many millions of years, the galaxies may swing by one another repeatedly. It’s possible that their cores and arms will meld, leaving behind completely reshaped arms, and an even brighter, cyclops-like “eye” at the core. Star formation will also slow down once their stores of gas and dust deplete, and the scene will calm.
Video A: Tour of Galaxies IC 2163 and NGC 2207
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).
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.
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Media Contacts
Laura Betz – laura.e.betz@nasa.gov, Claire Andreoli – claire.andreoli@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 Oct 30, 2024 Editor Marty McCoy Contact Laura Betz laura.e.betz@nasa.gov Related Terms
Astrophysics Galaxies Galaxies, Stars, & Black Holes Research Goddard Space Flight Center Hubble Space Telescope James Webb Space Telescope (JWST) Science & Research Spiral Galaxies The Universe View the full article
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