The Classroom Astronomer Newsletter

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The Classroom Astronomer Newsletter #20 - February 24, 2022 (21st delayed)
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The Classroom Astronomer Newsletter #20 - February 24, 2022 (21st delayed)

Eyeballing Stellar Spectral Types, Astronomy Cafés for Students and Teachers, Jelly Prisms for Gravitational Lensing Demonstrations

Feb 24
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