back to article Hubble snaps mystery green death nebula in NGC 1846

NASA's Hubble Space Telescope has captured an image of the death of a star in a nearby dwarf galaxy. Death of a star in the Globular Cluster NGC 1846 Hubble snapped the shot of the cumbersomely named Globular Cluster NGC 1846, a collection of hundreds of thousands of stars in the outer halo of the Large Magellanic Cloud, in …


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  1. The First Dave

    But why is it green?

    1. Adam T

      The death of...


    2. Still Water


      ...Remember it's false colour, so it may not actually *be* green ("colour" is somewhat hard to define in astronomy other than by wavelength of light). The light received may well be green if it's from [OIII] (forbidden Oxygen III transition) which is fairly common in planetary nebulae. (OK - it's more of a teal-type colour, but close enough).

      1. Old Handle

        False color?

        Is it? I didn't see any mention either here or on that it was false color. Doing a little more searching, I found a page stating "the cluster was observed in filters that isolate blue, green, and infrared starlight". So presumably that would mean the green is really green, and only the red channel is "false" (actually infrared).

        Does that count as false color? I'm not sure, maybe stretching-the-truth color.

    3. Anonymous Coward
      Anonymous Coward

      Terraforming replicators. Go read 'Absolution Gap' (or the whole Revelation Space series if you've not yet done so).

  2. jai

    You'd prefer another target? A military target? Then name the system!

    That's no moon....

  3. Anonymous Coward
    Anonymous Coward

    We are DOOMED

    AIEE the moties are coming, The moties are coming!!!!!!

    Where is Crazy Eddie??

  4. arrbee


    There are a few stars that look green(ish); the colour largely reflects temperature and there are many blue and red stars, not to mention yellow (in most cases its easier to see the colours in a telescope).

    Note that colour is only partly correlated with age - some stars start off red and then just fade away

    (providing a fine example to M. Hucknell).

    1. Sorry that handle is already taken. Silver badge

      Blackbody Spectrum

      The blackbody spectrum doesn't pass through green, so any green tinge to a star would be from the absorption or emission spectra of elements in the star's outer layers.

      Either way this is a nebula.

  5. Alister

    in a nearby dwarf galaxy...

    right next door, really, only 160,000 light years away...

  6. Steve Knox
    IT Angle

    If it is a cluster member,

    what's the failover mode?

  7. Field Marshal Von Krakenfart

    "in a nearby dwarf galaxy"

    So that's where they come from..

  8. Forget It

    Green explained?

    See here:

    there's a green valley between the blue cloud and red sequence.

    Go figure.

  9. DanceMan

    A moment of silence, please

    Takes tinfoil hat off in respect.

  10. Winkypop Silver badge

    Lister's washing basket

    So that's where it went...

  11. Ray 8


    maybe the lense needs wiping

  12. Blasmeme

    The greenfly conversion has begun...

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