NASA releases stunning photo of cartwheel galaxy

Posted: January 24, 2018 by oldbrew in Astronomy


It’s an enhancement of an earlier image, but this just has to be seen.
H/T Sci-News

NASA has released the sharpest image ever taken of the Cartwheel Galaxy, a lenticular galaxy in the constellation Sculptor.

The Cartwheel Galaxy was first spotted on wide-field images from the U.K. Schmidt telescope and then studied in detail using the Anglo-Australian Telescope.

Also known as LEDA 2248, ESO 350-40 and IRAS 00352-3359, the galaxy is an estimated 150,000 light-years in diameter and has a mass of about 3 billion solar masses.

Along with the two galaxies on the left, the Cartwheel is part of a group of galaxies approximately 500 million light-years away.

According to astronomers, the cartwheel shape of the galaxy is the result of a violent galactic collision.

Continued here.

Comments
  1. Lance Wallace says:

    Compared to the Milky Way (500 billion solar masses), this Cartwheel galaxy must be just a tiny remnant of whatever collision produced it.

    https://phys.org/news/2017-01-scientists-true-mass-milky.html

  2. oldbrew says:

    Lance – here’s the last line of the full report:

    The ring contains at least several billion new stars that would not normally have been created in such a short time span and is so large our entire Milky Way would fit inside. [bold added]

    An estimation of the galaxy’s span resulted in a conclusion of 150,000 light years, which is slightly larger than the Milky Way.
    http://en.wikipedia.org/wiki/Cartwheel_Galaxy

    So Cartwheel is bigger but Milky Way has more mass.
    – – –
    See also: There is an alternative theory, the Ball-of-Light Particle Model
    http://www.constellation-guide.com/cartwheel-galaxy/
    [scroll down]

  3. JB says:

    IMO, Arp’s explanations are closer to the truth than galactic collision.

  4. u.k.(us) says:

    “…the Cartwheel is part of a group of galaxies approximately 500 million light-years away.”
    ===========
    Read:
    This is what it looked like 500 million light years ago, the light has just now reached our detectors.
    Might be different for the locals, after all that time 🙂

  5. Richard111 says:

    Wonder how many intelligent life forms came into being over that 500 million years. Given that ours doesn’t look like lasting much longer can one say intelligent life anywhere in the universe will only be visible for around 200 years?

  6. oldbrew says:

    Is the twinkly star at top right escaping from the cartwheel?