Now accessible on mobile devices, this NASA catalog combines interactive visualizations with detailed data on all known exoplanets. More than 4,000 have been confirmed as of mid-2019. You can search by star or planet name, and filter the results by planet type and discovery method. It may surprise students to see how few terrestrial planets have been discovered (about 4% of all confirmed exoplanets). The visualization tools include: 1) Compare the exoplanet to Earth or Jupiter in size; 2) View the planet's orbit and ecliptic plane as part of its own solar system; 3) Compare the exoplanet's host star to Earth's Sun; and 4) View other planets within the same solar system and the predicted habitable zone. Hugely fun, very robust resource! Highly recommended by the editors.

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Here is a link to a free blackbody calculator, created by SpectralCalc.com. You can toggle between photons/second and watts; choose from three units of measurement; and set blackbody properties such as emissivity and temperature. The program auto-displays a corresponding graph.

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Here you'll find a comprehensive encyclopedia of exoplanets, updated continuously by a team at the Paris Observatory. Click on "Catalog" to see a complete list of confirmed exoplanets and candidates for exoplanet status. You can filter by detection method, including radial velocity, primary and secondary transit methods, microlensing, astrometry, and more. The cataloged list shows the following data on each exoplanet: mass, radius, period, orbital inclination, semi-major axis, year of discovery, and eccentricity. You can also view diagrams that display orbital period vs. planetary mass and frequency vs. planetary mass. Great way to introduce rich data in the classroom.

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Astronomy professor Michael Richmond has put together an easy-to-read set of 19 emission line wavelengths and their corresponding strengths that simulates the appearance of data produced by a good visual spectroscope. It is part of a larger body of work developed by Dr. Richmond to make high-quality digital astronomy images and tutorials available to large audiences. Click on any of the individual elements for more fine-grain detail.

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