You should strongly consider making a product and selling it, then using spaceindustrynews.com as a friendcatcher for that product. This lets you have a virtually ad-free experience for that site (with the exception of a few plugs for the house product every once in a while), and would probably be substantially more lucrative than donations or webmaster welfare (AdWords in a non-commercial niche). It will likely sell to a fraction of a percent of your audience, but given that rather more than that is people with high-paying jobs in e.g. engineering or the space industry, amounts of money which are lifechanging for you (when aggregated) are still pretty small beer for them.