When and Where A Marathon Is Possible
The number of Messier objects visible in any one night varies depending on a few factors, including the location of the observer, the duration of daylight/nighttime, and the season (the positions of the Messier objects relative to the sun varies with the season).
Read more about this topic: Messier Marathon
Famous quotes containing the word marathon:
“... marathon swimming is the most difficult physical, intellectual and emotional battleground I have encountered, and each time I win, each time I touch the other shore, I feel worthy of any other challenge life has to offer.”
—Diana Nyad (b. 1949)