Institute for Astronomy Home
IFA Home Page   |    Search   |    Other Editions    No. 52 - 2014 
  All Articles  


2015 IfA Calendar

2015 IfA poster calendar

The 2015 IfA poster calendar (17 inches by 22 inches) features the Laniakea Supercluster, which was defined by IfA astronomer Brent Tully and colleagues. Laniakea is a vast area of gravitational attraction that includes our Milky Way and about 100,000 other galaxies. It has a diameter of 160 Mpc, or about 500 million light-years, and contains 1017 (a 100 quadrillion) times the matter in our Sun. The name Laniakea, which means “immense heaven” in Hawaiian, honors the Polynesian navigators who used their knowledge of the heavens to voyage across the immensity of the Pacific Ocean. Friends of the IfA may pick up a free calendar at IfA offices in Mānoa, on Maui, and in Hilo. For more information about Laniakea, see