globular clusters

A Hubble image of PSO J174.0675-10.8774 goes much deeper and has higher resolution than ground-based images, showing more stars. Credit: NASA/ESA/Hubble and Judy Schmidt
What is the Milky Way’s most distant globular cluster?
Phil Plait

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Gaia: The sky is littered with undigested galaxies
Phil Plait
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Stars in some of the stellar streams recently discovered using Gaia data superposed on a map of the galaxy. Credit: ESA/Gaia/DPAC
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Hubble's view of the globular cluster M2: It's full of (weird) stars
Phil Plait
Apr 9, 2019
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The core of the globular cluster M2 is packed with stars. Credit: ESA/Hubble & NASA, G. Piotto et al.
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The imperfect perfection of the star cluster NGC 1898
Phil Plait
Mar 11, 2019
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A close-up of the reddish splotch in the globular cluster NGC 1898. Credit: ESA/Hubble & NASA
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What is the mass of the Milky Way?
Phil Plait
Mar 8, 2019
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The most current map of the Milky Way is shown in an artist’s representation. The Sun is directly below the galactic center, near the Orion Spur. The Scutum-Centaurus arms sweeps out to the right and above, going behind the center to the far side.
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Astronomers accidentally discover a nearby galaxy in a Hubble image!
Phil Plait
Feb 1, 2019
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The tiny and faint dwarf galaxy Bedin I is almost hidden in the background among the much brighter stars in the globular cluster NGC 6752. Note several other far more distant galaxies can be seen, too.
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Astronomers pew-pew their way to super-sharp images
Phil Plait
Jan 9, 2019
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Four lasers beam into the sky to help sharpen images taken using the Very Large Telescope. Credit: ESO/F. Kamphues
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A distant box of jewels
Phil Plait
Jan 4, 2019
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The spectacular globular cluster NGC 1466. Credit: ESA/Hubble & NASA
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A cluster of clusters: The globulars of Coma
Phil Plait
Dec 10, 2018
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The inner part of the massive Coma galaxy cluster, where thousands of galaxies swarm. Credit: NASA, ESA, J. Mack (STScI), and J. Madrid (Australian Telescope National Facility)
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The Milky Way ate another galaxy, and we can still see the undigested bits
Phil Plait
Nov 6, 2018
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Artwork depicting the stars from Gaia-Enceladus (arrows indicate their velocity) merging with the Milky Way based on actual physical simulations.
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The last place to look for planets: Omega Centauri
Phil Plait
Aug 14, 2018
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The mighty Omega Centauri, the largest globular cluster orbiting the Milky Way. Credit: ESO/INAF-VST/OmegaCAM. Acknowledgement: A. Grado, L. Limatola/INAF-Capodimonte Observatory
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An ancient galaxy hides among the young
Phil Plait
Jun 22, 2018
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NGC 1277 is a galaxy that appears, despite its size, to have remained unchanged since it formed billions of years ago. Almost all the little fuzzies you see in the image are globular clusters.
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Gaia: This is not a photo of the night sky
Phil Plait
Apr 30, 2018
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A section of the all-sky map made using the second data release from the Gaia mission. This maps the density of stars versus position, where brighter pixels are places with more stars. Credit: ESA/Gaia/DPAC
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A precise distance for an ancient beauty
Phil Plait
Apr 5, 2018
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The center of the globular cluster NGC 6397 is a spectacular assortment of hundreds of thousands of stars. Credit: NASA, ESA, and T. Brown and S. Casertano (STScI)  Acknowledgement: NASA, ESA, and J. Anderson (STScI)
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What is this galaxy doing without a dark matter halo?
Phil Plait
Mar 28, 2018
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This Hubble Space Telescope image of NGC 1052-DF2 shows it as a faint bluish glow, and we see far more distant background galaxies right through it. Credit: P. van Dokkum; R. Abraham; STScI, Space Telescope Science Institute
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Hubble gets Messier
Phil Plait
Mar 21, 2018
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The core of M 4, at 5,000 light years away the closest globular cluster to Earth, making it a prime target for Hubble Space Telescope. Credit: ESA/Hubble & NASA
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