Cosmic map shows Milky Way at the edge of a supercluster

Posted to Maps  |  Tags: , ,  |  Nathan Yau

Nature highlights the research of R. Brent Tully et al, which defines a supercluster called Laniakea. A supercluster is like a network of galaxies, and according to this work, the Milky Way is at the edge of this one.

From the abstract:

Here we report a map of structure made using a catalogue of peculiar velocities. We find locations where peculiar velocity flows diverge, as water does at watershed divides, and we trace the surface of divergent points that surrounds us. Within the volume enclosed by this surface, the motions of galaxies are inward after removal of the mean cosmic expansion and long range flows. We define a supercluster to be the volume within such a surface, and so we are defining the extent of our home supercluster, which we call Laniakea.

See the full paper here [pdf].

Favorites

Unemployment in America, Mapped Over Time

Watch the regional changes across the country from 1990 to 2016.

Where People Run in Major Cities

There are many exercise apps that allow you to keep track of your running, riding, and other activities. Record speed, …

The Best Data Visualization Projects of 2011

I almost didn’t make a best-of list this year, but as I clicked through the year’s post, it was hard …

The Most Unisex Names in US History

Moving on from the most trendy names in US history, let’s look at the most unisex ones. Some names have …