Great Astronomy Websites

In the Internet world, there are great sites pertaining to the subject of Astronomy everywhere - you just have to look! There is no need to look, since I have suggested the Top 4 Astronomy Sites (in my opinion), which are excellent in intriguing novice and advanced astronomers alike with vital resources and amazing photography of the universe's galaxies, nebulae, etc. Their links are provided below and open up in a new tab or window.
1. Hubblesite (hubblesite.org)
Hubblesite, a 'division' of NASA, is dedicated to revealing to visitors the amazing amount of discoveries that were found using the Hubble Space Telescope, which was first sent up in 1990. Also, I admire Hubblesite's photo gallery since it fascinates me the things that are in our universe. To top that off for those social media junkies out there, Hubblesite has a Facebook page, 2 (or possibly more) Twitter pages, and a YouTube channel!
2. NASA's main site (NASA.gov)
NASA is your one-stop shop for looking up a launch schedule for the next mission and looking back in time to the past space launches of America. Just like Hubblesite, NASA has many social media sites; it additionally has a Flickr photostream!
3. Kids Astronomy (kidsastronomy.com)
Fun, colorful website that caters towards kids with games, fun and simple facts, and more!
4. MSNBC.com Cosmic Log (cosmiclog.msnbc.msn.com)
Interesting science, technology, and cosmic news updated by Alan Boyle.

2015 Update: MSNBC Cosmic Log is no longer available, but Alan Boyle has his own Cosmic Log blog and there is an NBC News Cosmic Log section