More than two centuries ago, astronomer Charles Messier compiled the Messier catalog—a list of 110 celestial objects. This list inspired the Messier Marathon, an overnight challenge where stargazers try to spot every galaxy, nebula, and star cluster it contains. But there’s only a small window each spring when it can be done, sending observers racing against the clock—and the rising sun—to catch them all. 🌌
Find out how to do it:
https://on.natgeo.com/BRWA0313 
