The newest, and heftiest yet, Carnival of Space is being hosted by New Frontiers.
I've noticed that when I post about the new Carnival, it doesn't seem like too many people comment; it's historically the category of my posts that gets the fewest comments. I'm curious: is that because few people actually care about the Carnival, or it's not a comment-worthy kind of post, or that you make any comments on the relevant host's blog?
The CoS is actually a great event; it collects all the best space and astronomy posts of the week and puts them in one place for your reading pleasure. I've found several astronomy blogs on the CoS that I now read regularly, so there are tons of reasons to check in. Go read it!