I really like science sites, especially space related.
I rate graphics and layout as 7/10. There isn't anything wrong with the layout, maybe packed a little tight only, but you need more graphics. Not much more, but your articles/news need content related images to be more appealing. Also your top banner doesn't fit the color of your layout. The banner could also be bigger, not in height but in width.
Please post here when you add some more visual content to you pages, I would like to give it another change of ending up in my bookmarks.
Hmm... perhaps change your favicon too, it doesn't quite match the looks of your page. Maybe a blue orb would work better, or something...
