You can use your mouse to control the view: click-drag will change the right ascension/decliation, double click zooms in, and mouse scroll-wheel zooms in and out.
The following key bindings are also available: left, right, up, down (scroll the view), +, - (zoom), r (reset view).
The raw data is tiled over a sphere using this scheme. WebGL and the three.js library are used for rendering.
Based on the The cosmic microwave backround website by Damien George.