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Explorer 1: The Beginning of American Space Science — 5 Comments

  1. Thanks for this! The launch of Explorer 1 is the earliest memory I have of a news event. (I was not quite 6 years old.) I can still see in my mind’s eye the headlines in The Arizona Republic above the very same photo of the lauch that you included in this post (in black and white, of course). The newspaper published the time when it would be visible overhead, and my whole family stood out in the back yard that night to catch sight of the satellite.

  2. Hi Bob,
    in your last post you say “I use Stellarium to generate many of the sky images in this post series; a new version of the app was released on March 25th. One REALLY COOL feature in the new version is the ability to map data from dozens of different sky surveys onto the night sky.”
    I downloaded the last version of Stellarium but was unable to do that. Which command did you use?
    Thanks,
    Claudio Costa

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