Our universe- nebulae (Introduction)
http://blogs.scientificamerican.com/basic-space/2011/10/31/spooky-nebulae-ghosts-snakes...
Gorgeous pictures, thanks to Hubble
Our universe- Hubble tricks
by David Turell, (5471 days ago) @ David Turell
http://blogs.scientificamerican.com/basic-space/2011/10/31/spooky-nebulae-ghosts-snakes...
Gorgeous pictures, thanks to Hubble
Cosmologists' tricks using hubble and galaxy lensing
http://www.physorg.com/news/2011-11-hubble-disc-black-hole.html