User:PNSMurthy/Largest Galaxies

Below is a list of the largest galaxies so far discovered. Many of these galaxies are millions of light years away, so these sizes are prone to be inaccurate, and will change as technology and techniques improve.

Caveats
The order of this list is uncertain, for the following reasons:
 * Galaxies do not have precise boundaries. This list puts the boundaries of galaxies where the density of stars drops to 1 per hundred light year squared.
 * Most galaxies have different emissions of light at different wavelengths. Such an example is IC 1101 whose X-ray emission extends to 5.5–6.6 million light years despite its smaller stellar diameter.

List
Included galaxies are over 300,000 light years in diameter, including features which may not typically be considered parts of "classical" galaxies; e.g. tidal tails or haloes. The Milky Way, for comparison, is only about 140,000 light years across, even including its large halo and detailed surveys detecting spare star fields that would be impossible to see for a galaxy much further away.