Exoplanets
Use this actuated telescope to take some exoplanet light curves. http://www.virtualtelescope.eu/extrasolar-planets/
Online course https://www.habworlds.org/
Catalog http://phl.upr.edu/projects/habitable-exoplanets-catalog/results
Resources http://phl.upr.edu/projects/habitable-exoplanets-catalog/exoplanet-resources