Update (2021 Aug. 4): The Boeing Starliner launch has been delayed, indefinitely, until NASA and Boeing can determine the "cause of the unexpected valve position indications on the CST-100 Starliner propulsion system."
Update (2021 Aug. 3): August 3 Launch of the Boeing Starliner was scrubbed "due to unexpected valve position indications in the Starliner propulsion system" according to NASA. NASA goes on to say "Pending resolution of the forward work, our next available launch opportunity would be 12:57 p.m. EDT / 16:57 UTC on Wednesday, Aug. 4."
More information on the technical problem: Link >>> https://starlinerupdates.com/nasa-boeing-to-delay-starliner-launch/
Boeing CST-100 Starliner space capsule, which is expected to have another, non-crewed test launch on August 3 (back-up launch date August 4). A previous test launch in December of 2019 failed to dock with the International Space Station (ISS). It was originally scheduled to launch on July 30, but that launch was scrubbed at the last minute, due to the ISS being thrown out-of-control by jet thrusters, which
inadvertently activated following the addition of a new Russian space
station module. The Boeing Starliner is another commercial spacecraft expected to transport NASA astronauts to the ISS, in addition to the SpaceX Crew Dragon. In this photograph, the Starliner is being placed atop a United Launch Alliance Atlas V Rocket at the Cape Canaveral Air Force Station in Florida.
(Image Sources: NASA, Wikipedia.org, By NASA/Cory Huston - https://www.nasa.gov/feature/boeing-cst-100-starliner-takes-next-step-for-orbital-flight-test (image link), Public Domain, https://commons.wikimedia.org/w/index.php?curid=87867676)
More info on the Boeing Starliner: Link >>> https://en.wikipedia.org/wiki/Boeing_Starliner
More on the July 30 launch delay: Link >>> https://www.reuters.com/lifestyle/science/space-station-mishap-prompts-nasa-postpone-launch-boeing-starliner-2021-07-29/
Update (2021 Aug. 4): Launch date and time delayed indefinitely.
Update (2021 Aug. 3): Launch date and time ---
NASA Live-Stream coverage of Starliner launch, now scheduled for NO EARLIER THAN Wednesday, 2021 August 4, 12:57 p.m. EDT / 16:57 UTC (Live-Stream coverage
begins 12:00 Noon EDT / 16:00 UTC): Link >>> https://www.nasa.gov/nasalive
Original Launch Date and Time: NASA Live-Stream coverage of Starliner launch, now scheduled for Tuesday, 2021 August 3, 1:20 p.m. EDT / 17:20 UTC (Live-Stream coverage begins 12:30 p.m. EDT / 16:30 UTC): Link >>> https://www.nasa.gov/nasalive
Astronomical Calendar for 2021 August ---
Link >>> https://buhlplanetarium4.tripod.com/astrocalendar/2021.html#aug
Related Blog Post ---
"Astro-Calendar: 2021 July / Good View of Mercury July 9." Thur., 2021 July 1.
Source: Friends of the Zeiss.
Sunday, 2021 August 1.
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Formerly Astronomical Observatory Coordinator & Planetarium Lecturer, original Buhl Planetarium & Institute of Popular Science (a.k.a. Buhl Science Center), Pittsburgh's science & technology museum from 1939 to 1991.
Formerly Trustee, Andrew Carnegie Free Library and Music Hall, Pittsburgh suburb of Carnegie, Pennsylvania.
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* Andrew Carnegie & Carnegie Libraries: Link >>> http://www.andrewcarnegie.cc