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May 4, 2021 Archives
Tuesday, May 4, 2021
THE HAPPENING WORLD: SpaceX: Starlink Launch
Launch is scheduled for 19:01 UTC on 2021-05-04. If the launch is scrubbed today, a backup opportunity is available on 2021-05-05 at 18:39 UTC.
THE HAPPENING WORLD: Project Hail Mary by Andy Weir
Andy Weir's new novel, “Project Hail Mary”, is now available, both hardcover and Kindle. https://t.co/5jIsNohCUd
— John Walker (@Fourmilab) May 4, 2021
CONTINUITY: Freezing Water in a Sealed Container
TRACKING WITH CLOSEUPS: Rendering 3D in the Brain—The Pulfrich Effect
Here is more about the Pulfrich effect.
CONTINUITY: 1964—Mariner 4 Flyby of Mars
Here is more on Mariner 4. The film includes production of the “paint-by-number” manual production of the first image of Mars, which can still be seen at JPL today.
THE HAPPENING WORLD: SpaceX Starship SN15 Medium Altitude Test
Road closures and airspace exclusion notices have been posted for today, 2021-05-04, and tomorrow, 2021-05-05 There is no way to know when in this window the flight test will occur, if at all. Today's (May 4th) window opens at 17:00 UTC.
Update: The flight is scrubbed for today, 2021-05-04. Another launch opportunity remains for tomorrow, 2021-05-05. (2021-05-04 16:07 UTC)