The Protoplanetary Disk of HL Tauri from ALMA via NASA...

The Protoplanetary Disk of HL Tauri from ALMA via NASA http://j.mp/1pLfOXI

http://j.mp/10TFdCA

from my Tumblr http://j.mp/1uWx1Po

November 11, 2014 at 06:49AM