How can I find good sites about astronomy (news & image) ?

Answer 1

First of all try astronomy photo of the day for some nice pictures and info;

http://antwrp.gsfc.nasa.gov/apod/astropix.html

Here's another good one from sky & telescope magazine

http://skytonight.com/news/3310526.html?page=1&c=y

And of course, space .com -

http://www.space.com/news/