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Hubble Finds That the Nearest Quasar Is Powered by a Double Black Hole
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Explore Hubble 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 Multimedia Multimedia Images Videos Sonifications Podcasts e-Books Online Activities 3D Hubble Models Lithographs Fact Sheets Posters Hubble on the NASA App Glossary News Hubble News Social Media Media Resources More 35th Anniversary Online Activities 2 min read
Hubble Pinpoints Young Stars in Spiral Galaxy
This NASA/ESA Hubble Space Telescope image features the spiral galaxy NGC 1317. ESA/Hubble & NASA, J. Lee and the PHANGS-HST Team In this image, the NASA/ESA Hubble Space Telescope peers into the spiral galaxy NGC 1317 in the constellation Fornax, located more than 50 million light-years from Earth. Visible in this galaxy image is a bright blue ring that hosts hot, young stars. NGC 1317 is one of a pair, but its rowdy larger neighbor, NGC 1316, lies outside Hubble’s field of view. Despite the absence of its neighboring galaxy, this image finds NGC 1317 accompanied by two objects from very different parts of the universe. The bright point ringed with a crisscross pattern is a star from our own galaxy surrounded by diffraction spikes, whereas the redder elongated smudge is a distant galaxy lying far beyond NGC 1317.
The data presented in this image are from a vast observing campaign of hundreds of observations from Hubble’s Wide Field Camera 3 and Advanced Camera for Surveys. Combined with data from the ALMA array in the Atacama Desert, these observations help astronomers chart the connections between vast clouds of cold gas and the fiercely hot, young stars that form within them. ALMA’s unparalleled sensitivity at long wavelengths identified vast reservoirs of cold gas throughout the local universe, and Hubble’s sharp vision pinpointed clusters of young stars, as well as measuring their ages and masses.
Often the most exciting astronomical discoveries require this kind of telescope teamwork, with cutting-edge facilities working together to provide astronomers with information across the electromagnetic spectrum. The same applies to Hubble’s observations that laid the groundwork for the NASA/ESA/CSA James Webb Space Telescope’s scientific observations.
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Claire Andreoli (claire.andreoli@nasa.gov)
NASA’s Goddard Space Flight Center, Greenbelt, MD
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Last Updated May 14, 2025 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms
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During the Piston Powered Auto-Rama at the I-X Center in Cleveland on Monday, March 31, 2025, NASA Glenn Research Center’s Salvadore Oriti, right, discusses the technology behind free-piston Stirling cycle machines. Credit: NASA/Kristin Jansen NASA Glenn Research Center’s work in power and propulsion was on full display at the Piston Powered Auto-Rama at the I-X Center in Cleveland, March 28-30. The event is the largest indoor showcase of cars, trucks, motorcycles, tractors, and other engine-powered vehicles.
Center staff introduced guests to NASA’s Stirling engine technology, a free-piston Stirling power convertor that set records for accomplishing 14 years of maintenance-free operation at NASA Glenn in 2020. Attendees also explored how NASA is using space nuclear power to reach the deepest, dustiest, darkest, and most distant regions of our solar system through radioisotope power systems.
More than 57,500 people attended the event.
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1 min read NASA Glenn Engineer Highlights Research for Hubble Servicing Missions
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NASA Glenn Research Center senior materials research engineer Kim de Groh, who conducted research for Hubble Space Telescope servicing missions, shared her experiences during a presentation at Great Lakes Science Center, home of the NASA Glenn Visitor Center, in Cleveland on Thursday, May 8, 2025. Credit: NASA/Dennis Brown April 24 marked the 35th anniversary of the launch of NASA’s Hubble Space Telescope. The iconic space observatory remains a household name —the most well-recognized and scientifically productive telescope in history. Engineers at NASA’s Glenn Research Center in Cleveland played a significant role in how the telescope functions today.
NASA’s Glenn Research Center researchers Kim de Groh, left, and Joyce Dever conducted research for Hubble Space Telescope servicing missions. De Groh shared her experiences during a presentation at Great Lakes Science Center, home of the NASA Glenn Visitor Center, in Cleveland on Thursday, May 8, 2025. Credit: NASA/Sara Lowthian-Hanna NASA Glenn researchers assisted in all five Hubble servicing missions by testing damaged insulation, determining why it degraded in space, and recommending replacement materials.
One of those researchers, Kim de Groh, senior materials research engineer, shared some of that research in a special presentation at Great Lakes Science Center, home of the NASA Glenn Visitor Center, in Cleveland on May 8. She chronicled her Hubble experience with a presentation, a show-and-tell with samples directly from the telescope, and a Q&A addressing the audience’s Hubble-related questions.
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Preparations for Next Moonwalk Simulations Underway (and Underwater)
What is a black hole?
Well, the name is actually a little misleading because black holes aren’t actually holes. They’re regions in space that have a gravitational pull that is so strong that nothing can escape, not even light. Scientists know about two different sizes of black holes — stellar-mass black holes and supermassive black holes.
A stellar-mass black hole is born when a massive star dies. That’s a star that’s larger than our own Sun. These stars burn up all the nuclear fuel in their cores, and this causes them to collapse under their own gravity. This collapse causes an explosion that we call a supernova. The entire mass of the star is collapsing down into a tiny point, and the area of the black hole is just a few kilometers across.
Supermassive black holes can have a mass of millions to tens of billions of stars. Scientists believe that every galaxy in the universe contains a supermassive black hole. That’s up to one trillion galaxies in the universe. But we don’t know how these supermassive black holes form. And this is an area of active research.
What we do know is that supermassive black holes are playing a really important part in the formation and evolution of galaxies, and into our understanding of our place in the universe.
[END VIDEO TRANSCRIPT]
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Explore Hubble 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 Social Media Media Resources Multimedia Multimedia Images Videos Sonifications Podcasts e-Books Online Activities Lithographs Fact Sheets Posters Hubble on the NASA App Glossary More 35th Anniversary Online Activities 2 min read
Hubble Comes Face-to-Face with Spiral’s Arms
This Hubble Space Telescope image showcases the spiral galaxy NGC 3596. ESA/Hubble & NASA, D. Thilker The spiral galaxy NGC 3596 is on display in this NASA/ESA Hubble Space Telescope image that incorporates six different wavelengths of light. NGC 3596 is situated 90 million light-years from Earth in the constellation Leo, the Lion. British astronomer Sir William Herschel first documented the galaxy in 1784.
NGC 3596 appears almost perfectly face-on when viewed from Earth, showcasing the galaxy’s neatly wound spiral arms. These bright arms hold concentrations of stars, gas, and dust that mark the area where star formation is most active, illustrated by the brilliant pink star-forming regions and young blue stars tracing NGC 3596’s arms.
What causes these spiral arms to form? It’s a surprisingly difficult question to answer, partly because spiral galaxies are so diverse. Some have clear spiral arms, while others have patchy, feathery arms. Some have prominent bars across their centers, while others have compact, circular nuclei. Some have close neighbors, while others are isolated.
Early ideas of how spiral arms formed stumped astronomers with the ‘winding problem’. If a galaxy’s spiral arms are coherent structures, its arms would wind tighter and tighter as the galaxy spins, until the arms are no longer visible. Now, researchers believe that spiral arms represent a pattern of high-density and low-density areas rather than a physical structure. As stars, gas, and dust orbit within a galaxy’s disk, they pass in and out of the spiral arms. Much like cars moving through a traffic jam, these materials slow down and bunch up as they enter a spiral arm, before emerging and continuing their journey through the galaxy.
Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Media Contact:
Claire Andreoli (claire.andreoli@nasa.gov)
NASA’s Goddard Space Flight Center, Greenbelt, MD
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Last Updated May 09, 2025 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms
Hubble Space Telescope Astrophysics Astrophysics Division Galaxies Goddard Space Flight Center Spiral Galaxies 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 35th Anniversary
Hubble’s Night Sky Challenge
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