We present a 3D map of interstellar dust reddening. Using 800 million stars with Pan-STARRS 1 photometry, and matched 2MASS photometry for 200 million stars, the map traces dust reddening in three dimensions across three-quarters of the sky.

Volume renderings of the inferred dust opacity, moving the camera through the Galaxy on different trajectories.

The following videos show cumulative reddening out to increasing distances, in select regions of the sky. Each frame shows a different statistical realization of the map, so that the noise in each pixel shows the uncertainty in reddening. The graticules show Galactic longitude and latitude.

Creative Commons License
The above videos of Milky Way dust by Gregory M. Green are licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.