I will add my own comment too.
But this isn't from an expert or anything, just a visitor
Personally, I like the topic or your site. Space is one of my fave subjects!
But I got discouraged by the body's font. It's too big and really annoying. You should try making it smaller but still literate for the general audience.
The template would need some work too.
Might I suggest that you use wordpress in your site?
Technically it's a blogging platform but it can be used for a website. As they say, "
Google loves blogs." If you wanna get more hits, I'd suggest you try it. It would help make your template neater and more attractive to the users too. So you can focus more on your content.
You can download wordpress from
http://wordpress.org . They have a list of templates for you to choose form in this site:
http://themes.wordpress.net . You could just edit that or make your own.
I hope you give it a shot.