globular clusters

The globular cluster RBC EXT8 (inset, left) orbits the Andromeda galaxy (right) and may be one of the oldest known such clusters. Credit: ESASky and CFHT
An ancient star city circles our galactic twin. In fact... it's *too* ancient
Phil Plait
Dec 2, 2020
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Astronomers see the Milky Way eating one of its own
Phil Plait
Oct 19, 2020
M92, a globular cluster about 27,000 light years from Earth. Credit: ESA/Hubble & NASA Acknowledgement: Gilles Chapdelaine
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The Phoenix star stream, remnant of a long-dead stellar city
Phil Plait
Aug 12, 2020
Artwork depicting the Phoenix stream circling the Milky Way (left), and some of the old red stars that were once members of the parent globular cluster that got torn apart to make the stream (right). Credit: James Josephides (Swinburne Astronomy Productio
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How to make a massive star cluster: Start with a lot of gas. A *lot*.
Phil Plait
May 5, 2020
Detail of Hubble image of the globular cluster M22. Credit: ESA/Hubble & NASA
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Star clusters can disrupt planetary systems, tossing planets into black holes
Phil Plait
Feb 11, 2020
Artwork of a black hole in the final stages of devouring a star. In globular clusters, they may eat rogue planets as well. Credit: NASA/JPL-Caltech
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A globular cluster for the new year: M22
Phil Plait
Jan 1, 2020
Detail of Hubble image of the globular cluster M22. Credit: ESA/Hubble & NASA
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The Andromeda Galaxy ate its small friends… twice
Phil Plait
Oct 9, 2019
The Andromeda Galaxy grew by eating smaller galaxies. Credit: Local Group Survey Team and T.A. Rector (University of Alaska Anchorage) / Phil Plait
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Downtown Sagittarius is a busy place
Phil Plait
May 27, 2019
A Hubble image of a region of the sky in Sagittarius reveals thousands of stars of all different colors. Credit: ESA/Hubble & NASA
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What is the Milky Way’s most distant globular cluster?
Phil Plait
May 9, 2019
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
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Gaia: The sky is littered with undigested galaxies
Phil Plait
Apr 22, 2019
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
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
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
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
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
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
The spectacular globular cluster NGC 1466. Credit: ESA/Hubble & NASA
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