In the Vinony graph
Vinony's link graph records 13 inbound references to Messier marathon, and connects out to Messier object, Milky Way and galaxy.
It sits within the topics Amateur astronomy, Messier objects and Observational astronomy.
Vinony links it to 12 Wikipedia language editions.
Connections
Messier object
Entity
Milky Way
Entity
galaxy
Entity
constellation
Entity
latitude
Entity
nebula
Entity
ecliptic
Entity
star cluster
Entity
Charles Messier
Entity
declination
Entity
right ascension
Entity
new moon
Entity
Messier 81
Entity
Messier 82
Entity
Q13958
Entity
Messier 103
Entity
Galactic Center of Milky Way
Entity
equatorial coordinate system
Entity
amateur astronomy
Entity
Virgo Cluster
Entity