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  1. NASA (nasa@social.beachcom.org)'s status on Thursday, 10-Oct-2024 04:48:12 JST NASA NASA

    420 Years Ago: Astronomer Johannes Kepler Observes a Supernova https://www.nasa.gov/history/420-years-ago-astronomer-johannes-kepler-observes-a-supernova/ #NASA #NASAHistory

    In conversation about 2 months ago from social.beachcom.org permalink

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    1. 420 Years Ago: Astronomer Johannes Kepler Observes a Supernova
      from Kelli Mars
      In October 1604, a new star appeared in the sky, puzzling astronomers of the day. First observed on Oct. 9, German astronomer Johannes Kepler (1571-1630)

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