Jump to content

Recommended Posts

Posted
low_STSCI-H-p-0654a-k-1340x520.png

The small open star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 in Scorpius, about 8,000 light-years away from Earth. Some of the stars in this cluster are extremely massive and emit intense ultraviolet radiation. The brightest object in the picture is designated Pismis 24-1. It was once thought to weigh as much as 200 to 300 solar masses. This would not only have made it by far the most massive known star in the galaxy, but would have put it considerably above the currently believed upper mass limit of about 150 solar masses for individual stars. However, high-resolution Hubble Space Telescope images of the star show that it is really two stars orbiting one another (inset pictures at top right and bottom right). They are estimated to each be 100 solar masses. The Hubble Advanced Camera for Surveys images were taken in April 2006.

View the full article

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Topics

    • By NASA
      Astronaut Victor Glover interacts with an Orion spacecraft simulator during NASA’s “All-Star Shoot for the Stars” event at The Children’s Museum of Indianapolis on Saturday, July 18, 2025. Credit: NASA/Zach Lucas  From astronauts to athletes, researchers to referees, and communicators to coaches, NASA is much like basketball – we all train to reach the top of our game. Staff from NASA’s Glenn Research Center in Cleveland drove home this point during the “All-Star Shoot for the Stars” event at The Children’s Museum of Indianapolis, July 17-19. As part of WNBA All-Star Game activities, this event highlighted NASA technology while illuminating the intersection of sports and STEM. 
      The event offered a captivating look into space exploration, thanks to the combined efforts of NASA and museum staff. Highlights included a detailed Orion exhibit, a new spacesuit display featuring five full-scale spacesuits, and virtual reality demonstrations. Visitors also had the chance to enjoy an interactive spacesuit app and a unique cosmic selfie station. 
      On Friday, July 18, 2025, visitors at NASA’s “All-Star Shoot for the Stars” event at The Children’s Museum of Indianapolis look at a new spacesuit display featuring five full-scale spacesuits. Credit: NASA/Christopher Richards  The event was made even more memorable by Artemis II astronaut Victor Glover, who connected with visitors and posed for photos. WNBA legend Tamika Catchings also made a special appearance, inspiring attendees with a message to “aim high!” 
      “All Star Weekend presented an excellent opportunity to share NASA’s mission with the Indianapolis community and people across the Midwest who were in town for the game,” said Jan Wittry, Glenn’s news chief. “I saw children’s faces light up as they interacted with the exhibits and talked to NASA experts, sparking a curiosity among our potential future STEM workforce.” 

      Return to Newsletter View the full article
    • By European Space Agency
      More than one star contributes to the irregular shape of NGC 6072 – Webb’s newest look at this planetary nebula in the near- and mid-infrared shows what may appear as a very messy scene resembling splattered paint. However, the unusual, asymmetrical scene hints at more complicated mechanisms underway, as the star central to the scene approaches the very final stages of its life and expels shells of material, losing up to 80 percent of its mass.
      View the full article
    • By NASA
      Explore Webb Webb News Latest News Latest Images Webb’s Blog Awards X (offsite – login reqd) Instagram (offsite – login reqd) Facebook (offsite- login reqd) Youtube (offsite) Overview About Who is James Webb? Fact Sheet Impacts+Benefits FAQ Science Overview and Goals Early Universe Galaxies Over Time Star Lifecycle Other Worlds Observatory Overview Launch Deployment Orbit Mirrors Sunshield Instrument: NIRCam Instrument: MIRI Instrument: NIRSpec Instrument: FGS/NIRISS Optical Telescope Element Backplane Spacecraft Bus Instrument Module Multimedia About Webb Images Images Videos What is Webb Observing? 3d Webb in 3d Solar System Podcasts Webb Image Sonifications Webb’s First Images Team International Team People Of Webb More For the Media For Scientists For Educators For Fun/Learning 5 Min Read NASA’s Webb Traces Details of Complex Planetary Nebula
      NASA’s James Webb Space Telescope’s view of planetary nebula NGC 6072 in the near-infrared shows a complex scene of multiple outflows expanding out at different angles from a dying star at the center of the scene. In this image, the red areas represent cool molecular gas, for example, molecular hydrogen. Full image below. Credits:
      NASA, ESA, CSA, STScI Since their discovery in the late 1700s, astronomers have learned that planetary nebulae, or the expanding shell of glowing gas expelled by a low-intermediate mass star late in its life, can come in all shapes and sizes. Most planetary nebula present as circular, elliptical, or bi-polar, but some stray from the norm, as seen in new high-resolution images of planetary nebulae by NASA’s James Webb Space Telescope.
      Webb’s newest look at planetary nebula NGC 6072 in the near- and mid-infrared shows what may appear as a very messy scene resembling splattered paint. However, the unusual, asymmetrical appearance hints at more complicated mechanisms underway, as the star central to the scene approaches the very final stages of its life and expels shells of material, losing up to 80 percent of its mass. Astronomers are using Webb to study planetary nebulae to learn more about the full life cycle of stars and how they impact their surrounding environments.
      Image A: NGC 6072 (NIRCam Image)
      NASA’s James Webb Space Telescope’s view of planetary nebula NGC 6072 in the near-infrared shows a complex scene of multiple outflows expanding out at different angles from a dying star at the center of the scene. In this image, the red areas represent cool molecular gas, for example, molecular hydrogen. NASA, ESA, CSA, STScI First, taking a look at the image from Webb’s NIRCam (Near-Infrared Camera), it’s readily apparent that this nebula is multi-polar. This means there are several different elliptical outflows jetting out either way from the center, one from 11 o’clock to 5 o’clock, another from 1 o’clock to 7 o’clock, and possibly a third from 12 o’clock to 6 o’clock. The outflows may compress material as they go, resulting in a disk seen perpendicular to it.
      Astronomers say this is evidence that there are likely at least two stars at the center of this scene. Specifically, a companion star is interacting with an aging star that had already begun to shed some of its outer layers of gas and dust.
      The central region of the planetary nebula glows from the hot stellar core, seen as a light blue hue in near-infrared light. The dark orange material, which is made up of gas and dust, follows pockets or open areas that appear dark blue. This clumpiness could be created when dense molecular clouds formed while being shielded from hot radiation from the central star. There could also be a time element at play. Over thousands of years, inner fast winds could be ploughing through the halo cast off from the main star when it first started to lose mass.
      Image B: NGC 6072 (MIRI Image)
      The mid-infrared view of planetary nebula NGC 6072 from NASA’s James Webb Space Telescope show expanding circular shells around the outflows from the dying central star. In this image, the blue represents cool molecular gas seen in red in the image from Webb’s NIRCam (Near-Infrared Camera) due to color mapping. NASA, ESA, CSA, STScI The longer wavelengths captured by Webb’s MIRI (Mid-Infrared Instrument) are highlighting dust, revealing the star researchers suspect could be central to this scene. It appears as a small pinkish-whitish dot in this image.
      Webb’s look in the mid-infrared wavelengths also reveals concentric rings expanding from the central region, the most obvious circling just past the edges of the lobes.
      This may be additional evidence of a secondary star at the center of the scene hidden from our view. The secondary star, as it circles repeatedly around the original star, could have carved out rings of material in a bullseye pattern as the main star was expelling mass during an earlier stage of its life.
      The rings may also hint at some kind of pulsation that resulted in gas or dust being expelled uniformly in all directions separated by say, thousands of years.
      The red areas in NIRCam and blue areas in MIRI both trace cool molecular gas (likely molecular hydrogen) while central regions trace hot ionized gas.
      As the star at the center of a planetary nebula cools and fades, the nebula will gradually dissipate into the interstellar medium — contributing enriched material that helps form new stars and planetary systems, now containing those heavier elements.
      Webb’s imaging of NGC 6072 opens the door to studying how the planetary nebulae with more complex shapes contribute to this process.
      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).
      To learn more about Webb, visit:
      https://science.nasa.gov/webb
      Downloads
      View/Download all image products at all resolutions for this article from the Space Telescope Science Institute.
      Media Contacts
      Laura Betz – laura.e.betz@nasa.gov
      NASA’s Goddard Space Flight Center, Greenbelt, Md.
      Hannah Braun – hbraun@stsci.edu
      Space Telescope Science Institute, Baltimore, Md.
      Related Information
      View more Webb planetary nebula images
      Learn more about planetary nebula
      Interactive: Explore the Helix Nebula planetary nebula
      Watch ViewSpace videos about planetary nebulas
      More Webb News
      More Webb Images
      Webb Science Themes
      Webb Mission Page
      Related For Kids
      What is the Webb Telescope?
      SpacePlace for Kids
      En Español
      Ciencia de la NASA
      NASA en español 
      Space Place para niños
      Keep Exploring Related Topics
      James Webb Space Telescope


      Webb is the premier observatory of the next decade, serving thousands of astronomers worldwide. It studies every phase in the…


      Stars



      Stars Stories



      Universe


      Share








      Details
      Last Updated Jul 30, 2025 Editor Marty McCoy Contact Laura Betz laura.e.betz@nasa.gov Related Terms
      Goddard Space Flight Center Astrophysics James Webb Space Telescope (JWST) Nebulae Planetary Nebulae Science & Research Stars The Universe White Dwarfs View the full article
    • By NASA
      Explore This Section Science Uncategorized NASA eClips STEM Student… Overview Learning Resources Science Activation Teams SME Map Opportunities More Science Activation Stories Citizen Science   3 min read
      NASA eClips STEM Student Ambassadors Light Up CNU’s 2025 STEM Community Day
      More than 2,000 curious visitors from Newport News and the surrounding Hampton Roads region of Virginia flocked to Christopher Newport University (CNU) on May 31, 2025 for their annual STEM (Science, Technology, Engineering, & Mathematics) Community Day, and the NASA eClips team from the National Institute of Aerospace’s Center for Integrative STEM Education (NIA-CISE) made sure every one of them left with their eyes—and imaginations—fixed on the Sun.
      At the heart of the NASA eClips exhibit were NIA’s STEM Student Ambassadors—a team of carefully selected high school students from the Tidewater region of Virginia who underwent extensive training with NASA eClips educators during the summer of 2024. These bright, enthusiastic young leaders are passionate about communicating about and advocating for STEM. The STEM Student Ambassador program is made possible through a Coastal Virginia STEM Hub grant from the Virginia General Assembly and is already having an impact.
      Throughout the day, the Ambassadors engaged learners of all ages with two creative, hands-on experiences that connected STEM and the arts:
      Chalk Corona – Using black construction paper and vibrant chalk, participants recreated the Sun’s corona—the super-hot, gaseous “crown” that’s visible during a total solar eclipse. While they shaded and smudged, the Ambassadors explained why the corona is so important to solar research and handed out certified solar viewers for safe Sun-watching back home. Pastel Auroras – Visitors also discovered how solar wind, storms, and coronal mass ejections (aka Sun “sneezes”) spark Earth’s dazzling auroras. Guided by the Ambassadors, budding artists layered pastels to capture swirling curtains of light, tying recent mid-Atlantic aurora sightings to real-time space weather. Throughout the day, the Ambassadors’ energy was contagious, turning complex heliophysics into hands-on fun and opening eyes to the opportunities and careers that await in STEM. Judging by the smiles—and the dusting of chalk and pastels—NASA eClips’ presence was, quite literally, the “crowning” touch on an unforgettable community celebration of STEM.
      The NASA eClips project provides educators with standards-based videos, activities, and lessons to increase STEM literacy through the lens of NASA. It is supported by NASA under cooperative agreement award number NNX16AB91A and is part of NASA’s Science Activation Portfolio. Learn more about how Science Activation connects NASA science experts, real content, and experiences with community leaders to do science in ways that activate minds and promote deeper understanding of our world and beyond: https://science.nasa.gov/learn
      Two STEM Student Ambassadors engage a young girl while she creates her own Pastel Aurora artwork. Share








      Details
      Last Updated Jul 22, 2025 Editor NASA Science Editorial Team Related Terms
      Opportunities For Students to Get Involved Science Activation The Sun Explore More
      2 min read GLOBE-Trotting Science Lands in Chesapeake with NASA eClips


      Article


      1 day ago
      6 min read NASA’s TRACERS Studies Explosive Process in Earth’s Magnetic Shield


      Article


      6 days ago
      3 min read NASA Citizen Science and Your Career: Stories of Exoplanet Watch Volunteers
      Doing NASA Science brings many rewards. But can taking part in NASA citizen science help…


      Article


      6 days ago
      Keep Exploring Discover More Topics From NASA
      James Webb Space Telescope


      Webb is the premier observatory of the next decade, serving thousands of astronomers worldwide. It studies every phase in the…


      Perseverance Rover


      This rover and its aerial sidekick were assigned to study the geology of Mars and seek signs of ancient microbial…


      Parker Solar Probe


      On a mission to “touch the Sun,” NASA’s Parker Solar Probe became the first spacecraft to fly through the corona…


      Juno


      NASA’s Juno spacecraft entered orbit around Jupiter in 2016, the first explorer to peer below the planet’s dense clouds to…

      View the full article
    • By European Space Agency
      To mark its third year of highly productive science, astronomers used the NASA/ESA/CSA James Webb Space Telescope to scratch beyond the surface of the Cat’s Paw Nebula (NGC 6334), a massive, local star-forming region.
      View the full article
  • Check out these Videos

×
×
  • Create New...