No, you can't play Lego Universe offline.
The Lego Universe installation software is on a CD, but to play, you must log in online.
Technically, Lego Universe is online. However, it has to be downloaded first. :)
On your laptop or computer.
If
It is now
Sadly no!
LEGO Universe was shut down in the Spring of early 2012 unfortunately.
Yes just click on join and just type in your user name and make up a password thanks
Yes, you can play it in the free-to-play zone.
Yes
Yes