Beyond our Solar System
- Stardate Magazine: McDonald Observatory, University of Texas, Austin
- Educational Software: Search for astronomy software
- Sky & Telescope: Premier magazine for amateur astronomers
- Current Sky Events: Current astronomic events to watch for
- NASA Observatorium: Earth and Space Science data
- Space Telescope Updates from the Hubble Space Telescope
- High Energy Astrophysics: Educational resources in astrophysics
- National Space Science Data Center: NASA /Goddard:astrophysics
- Current Sky Events: Current astronomic events to watch for
- Stardate Magazine: McDonald Observatory, University of Texas, Austin
- Asteroid and Comet hazards: Information from NASA