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planet4589 (Jonathan McDowell)

@planet4589@mastodon.social

Joined: 10/30/2022



About planet4589 (Jonathan McDowell)

Astronomer at (but not speaking for) the Center for Astrophysics - Harvard and Smithsonian, working on Chandra, commenting on space launches. Somerville, MA. Orbital Police. All plots/images CC-BY

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