Ads are not relevant to my blog http://astronomyforeveryone.blogspot.com . Please, review my new blog.
how long does your blog alive? if its new then give google 1 week. Also try to use section targeting, just go to adsense help and type "section target" this should help to get some relevant content. btw you need more content
Your blog has only recently created with only one post. Give some time for the bots to crawl and then the ads should become more relevant then.
your blog is too new. It doesn't even indexed by google yet. Wait for 1-2 weeks, you should see some relevant ads.