http://www.sciencedaily.com/news/space_time/ : This site is where I get a lot of the news that you see featured every week. They archive science information from a lot of different sources – summarizing and explaining when necessary – and really nicely categorize all possible science topics in frequently updated subpages. And by frequent, I mean you can look forward to about 5 articles per major subtopic a day. This site is definitely worth your time.
http://www.space.com/ : Space.com, on the other hand, is space-specific. They deal in NASA news, astronomy, and burgeoning technology, and keep up with the international politics of space travel. This site even has ‘Search for Life’ on the navigation bar, which I’m particularly fond of.
http://www.spacenews.com/ : SpaceNews.com is not to be confused with Space.com. This website is all about the business and government side of space travel. Space News is where you want to go when you want to see analyses over recent NASA cuts, are curious as to where space-related government contracts disappeared to, and how other nations are going into space – stuff you’ll probably never find in the New York Times.
http://www.astrobio.net/ : Astrobiology. Extraterrestrials. If you’re looking for literally ‘space and alien’ news, this is the place to go. And it has a lot of text, images, and video over the major veins of research. The only thing is that it doesn’t update as often I’d like.
http://www.ted.com/ : Chances are you’ve heard of TED, but if you haven’t, you need to go there immediately. It’s full of excellently sorted footage from TED conferences, conferences where weird, brilliant, and passionate people go to talk about everything from alternate energy to the psychology of morality to globalization’s impact on poverty. More to the point, perhaps, they talk about potential extraterrestrials and what the world might be like after we make contact.
http://watchdocumentary.com/all_documentaries/#catscience : We all like to hate Netflix – they rather deserve it – and once they started cutting out some documentaries I started rooting around for my science fix. This site has hundreds (hundreds!) of science documentaries, usually whole instead of pieced together like YouTube. WatchDocumentary doesn’t just have astronomy and alien documentaries in their science section, and the website doesn’t just have science, either. Even if you’re not in the mood for Ancient Aliens or Cosmos, it’s worth looking around on.
http://www.openculture.com/freeonlinecourses : Free college lectures have come along way, and are probably going to become even better if the continual open source movement has anything to say about it. This page has a huge list of lecture videos for a variety of topics, but if you Ctrl+F for ‘Sciences,’ you can find a large collection of pretty awesome astronomy lectures. They also have aeronautics, engineering, and space-based physics. So, with all of the privatized space business in mind, you can practically teach yourself how to launch your own space tech to explore the solar system or join the search for extraterrestrials.