Leeds Astronomical Society LAS Meetings Observing Membership

 

 

Through the Looking Glass

One of the amazing things about being able to take these pictures, is sometimes discovering the distant Galaxies that appear as small fuzzy patches. Using the Simbad Astronomy database, it's often possible to estimate the approximate distance the light has travelled and sometimes that is 1-2 billion light years away. If a Galaxy has a quasar, even further distances can be determined. So far, the furthest we've seen, has been approx at a distance of 10 billion light years, more than twice the age of our Solar system, and about the same age as the our Galaxy, the Milky Way...

Scroll and click on the thumbnails below to display a larger version of the Galaxy images.

  • M31 - Andromeda Galaxy
    M31
  • M33 - Triangulum Galaxy
    M33
  • M51 - Whirlpool Galaxy
    M51
  • M63 - Sunflower Galaxy
    M63
  • M81 - Bode's Galaxy & M82 - Cigar Galaxy
    M81 & M82
  • M108 - Surfboard Galaxy & M97 - Owl Nebula
    M97 & M108
  • M101 - Pinwheel Galaxy & NGC5477
    M101
  • M106
    M106
  • M109 - Vacuum Cleaner Galaxy
    M109
  • NGC0891
    NGC0891 (1)
  • NGC0891
    NGC0891 (2)
  • NGC2403
    NGC2403
  • NGC2841 - Tiger's Eye Galaxy
    NGC2841
  • NGC3180 - Little Pinwheel Galaxy
    NGC3180
  • NGC34631 - The Whale Galaxy
    NGC4631
  • NGC5906 - The Splinter Galaxy
    NGC5906
  • NGC6503 - Lost In Space Galaxy
    NGC65036
  • Markarian's Chain
    Markarian's Chain
  • Perseus Cluster
    Perseus Cluster

M31 - Andromeda Galaxy

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More Information

The Simbad Astronomical database contains data on many of the distant galaxies, including many of those in the Principal Galaxies Catalogue (PGC).

Often the data includes information on the galaxy redshift, and the associated radial velocity in km/s, which is the speed at which the galaxy is moving away from us along our line of site.

Dividing the radial velocity (km/s) by the Hubble constant (km/s) gives the aprox. distance to the galaxy in Mega parsecs (Mpc). And as one parsec is equivalent to 3.26 light years, multiplying the distance in Mpc by 3,260,000 gives the approx. distance the light has travelled in light years.

Hubble constant