Some of these are laboratories that ask the student, teacher, or researcher to conduct an experiment by locating an object of interest on the web or making one up from their imagination.
Others are participatory exercises for particular subjects of interest such as:
- Becoming an observer
- Binary Stars and Extrasolar Planets
- Cassiopeia and Ursa Major
- International Year of Astronomy
- Liquid water on Europa
- Lunar Boom Town
- Observational astronomy
Lessons are activities that engage the participant in original astronomical research.
- First violet source in Leo
- First blue source in Boötes
- First cyan source in Caelum
- First green source in Tucana
- First yellow source in Aquila
- First orange source in Cancer
- First red source in Canis Major
Problem sets give the participants an opportunity to perform reasoning and mathematics.
Quizzes allow the students to test their knowledge and test-taking skills.
Theoretical astronomical activities
These are laboratories designed to introduce alternative explanations for astronomical phenomena. Examples include
- Cosmogony laboratory,
- Electric orbits,
- Electron beam heating/Laboratory,
- Magnetic field reversal,
- Neutrinos from the Sun, and
- Polar reversals.
- Backyard Astronomy
- Globulars in M31
- Highest temperature on Jupiter
- Spectral analysis of stars
- Spectrum of Vega
- Standard candles/Laboratory
- The visible sky
- Alignment telescope
- Early telescopes
- Planets around other stars
- Radio Interferometer Telescope
- Ancient or prehistorical astronomers watched the skies with more interest than we do today.
- International Astronomical Union
- NASA/IPAC Extragalactic Database - NED
- NASA's National Space Science Data Center
- The SAO/NASA Astrophysics Data System
- SDSS Quick Look tool: SkyServer
- SIMBAD Astronomical Database
- SIMBAD Web interface, Harvard alternate
- Spacecraft Query at NASA
- Universal coordinate converter