Women In Science

 NASA's Reach Across the Stars website lets you learn more about female scientist and has cool downloadables and videos. 

Space Place

NASA's Space Place - science-learning fun

ScienceCasts Youtube channel

ScienceCasts from NASA on YouTube

NASA Science

NASA's Science News

Virtual Skies

Virtual Skies (from NASA) - "Explore the exciting worlds of aviation technology and air traffic management."

NASA free curriculum

Someone posted this on the Secular Homeschoolers e-list; she said it's for kids 6th through 10th grade: NASA KLASS

NASA Kids' Club

NASA Kids' Club...I think that says it all, doesn't it? ;)

Apollo 11 Image Gallery

Courtesy of NASA

Free curriculum tools from NASA

for educators teaching astronomy: http://astrophysics.gsfc.nasa.gov/outreach/educators.php