Space Exploration and Science
 

The Space Program - Current

NASA - The main site
NASA TV - Live video and taped programming
NASA Kennedy Space Center
NASA SpaceFlight.com - Online resource for spaceflight news
Space Camp - The official web page
Space.com - News about space and its exploration
SpaceflightNow - The leading source for online news
Project Constellation - NASA's site about Ares, Orion and Altair
Project Constellation - A visual history
National Space Society - Nonprofit organization promoting space exploration

NASA Kennedy Space Center - Much historical information from the official source
Johnson Space Center - Center in Houston
Marshall Space Flight Center - Payload center in Huntsville
NASA Human Spaceflight - More info
The Encyclopedia Astronautica - Mark Wade's site, tons of historical information
Apollo Lunar Surface Journal - Excellent site containing info on the moon landings, including transcripts
Contact Light - A personal retrospective of Project Apollo
Apollo by the Numbers - Presented by Space Online and Richard Orloff

Astronomy Sites - What to look for

Heavens-Above - How to find satellites, the ISS, etc.
SkyMaps.com - Sky Maps and many other things
The Night Sky This Week - As it says
Astronomy a Go Go! - More info on the current sky

Magazine Sites

Astronomy.com - Magazine's website
Sky & Telescope - Magazine's website

Amateur Astronomy & Equipment

Cloudy Nights - Telescope reviews, "your astronomical community"
The Astronomical League - Many observing clubs
www.scopereviews.com - The Telescope Review Website, by Ed Ting
Yakima Astronomical Society - The local group
Telescopes.com - "The telescope experts"

Pictures

Views of the Solar System - Many facts and pictures about the planets in our system
Planetary Photojournal - NASA's image access home page
NASA's Astronomy Picture of the Day - Archive of pictures
NASA Image of the Day - Spaceflight, astronomy pictures

The Particle Adventure - "A tour of the inner workings of the atom..."