#apollo
#Launch Of #Apollo 11 In #RealTime (July 16, 1969) - #FranBlanche
I meticulously synchronized the console audio from the Booster, #CAPCOM, Flight, and RETRO feeds with footage from dozens of sources to come up with an experience close to what you would have gotten being on the inside of Mission Control on a headset for the launch of Apollo 11 on the morning of July 16, 1969. Enjoy!
https://www.youtube.com/watch?v=dhTvadtW2dc
#NASA #Moon #history
David Bowie en de blauwe planeet
Wel ja, in den beginne schiep God de hemel en de aarde, maar het is dankzij de technische vooruitgang dat nu ook de mens in staat is die schepping vanuit Gods eigen gezichtspunt te bekijken. Voor de gemakkelijkheid vergeet men dan maar dat het perspectief van waaruit je dat blauwe bolletje ziet oprijzen in het duister het perspectief is van de NASA, de ruimtevaartorganisatie die in de eerste plaats militaire doelen diende in de ‘wedloop met de Sovjet-Unie om de verovering van de ruimte’.
(...)
https://rivieren-en-meren.online/2022/06/02/david-bowie-en-de-blauwe-planeet/
"Scientists grow plants in lunar soil". "Researchers have grown the hardy and well-studied Arabidopsis thaliana in the nutrient-poor lunar regolith." "Arabidopsis thaliana, native to Eurasia and Africa, is a relative of mustard greens and other cruciferous vegetables like broccoli, cauliflower, and Brussels sprouts. It also plays a key role for scientists: due to its small size and ease of growth, it is one of the most studied plants in the world, used as a model organism for research into all areas of plant biology. As such, scientists already know what its genes look like, how it behaves in different circumstances, even how it grows in space."
"To grow the Arabidopsis, the team used samples collected on the Apollo 11, 12, and 17 missions, with only a gram of regolith allotted for each plant. The team added water and then seeds to the samples. They then put the trays into terrarium boxes in a clean room. A nutrient solution was added daily."
"The scientists found that the soils repelled water (were hydrophobic), causing the water to bead-up on the surface. Active stirring of the material with water was required to break the hydrophobicity and uniformly wet the soil. Once moistened, the lunar soils could be wetted by capillary action for plant culture."
"Every plant -- whether in a lunar sample or in a control -- looked the same up until about day six. After day six, however, it was clear that the plants were not as robust as the control group plants growing in volcanic ash, and the plants were growing differently depending on which type of sample they were in. The plants grew more slowly and had stunted roots; additionally, some had stunted leaves and sported reddish pigmentation."
"After 20 days, just before the plants started to flower, the team harvested the plants, ground them up, and studied the RNA. In a biological system, genes are decoded in multiple steps. First, the genes, or DNA, are transcribed into RNA. Then the RNA is translated into a protein sequence. These proteins are responsible for carrying out many of the biological processes in a living organism. Sequencing the RNA revealed the patterns of genes that were expressed, which showed that the plants were indeed under stress and had reacted the way researchers have seen Arabidopsis respond to growth in other harsh environments, such as when soil has too much salt or heavy metals."
Die aktuelle Show im #Roncalli #Apollo in #Düsseldorf ist echt cool und unterhaltsam.
Super Akrobatik, coole #Unterhaltung zwischen den Acts und schöne Führung durch die Musik der letzten Jahrzehnte.
Apollo Comms Flight Hardware Deep Dive
You no doubt recall the incredible Apollo Guidance Computer (AGC) reverse engineering and restoration project featured on the CuriousMarc YouTube channel a few years ago. Well, [Marc] and the team are at it again, this time restoring the Apollo Unified S-Band tracking and communication system flight hardware. As always, the project is well documented, carefully explained, full of problems, and is proceeding slowly despite the lack of documentation.
Like the guidance computer, the Unified S-Band system was pretty innovative for its day -- able to track, provide voice communications, receive television signals, and send commands to and monitor the health of the spacecraft via telemetry. The system operates on three frequencies, an uplink containing ranging code, voice and data. There are two downlinks, one providing ranging, voice, and telemetry, the other used for television and the playback of recorded data. All crammed into two hefty boxes totaling 29 kg.
So far, [Marc] has released part 9 of the series (for reference, the Apollo Guidance Computer took 27 parts plus 8 auxiliary videos). There seems to be even less documentation for this equipment than the AGC, although miraculously the guys keep uncovering more and more as things progress. Also random pieces of essential ground test hardware keep coming out of the woodwork. It's a fascinating dive into not only the system itself, but the design and construction techniques of the era. Be sure to check out the series (part 1 is below the break) and follow along as they bring this system back to life. [Marc] is posting various documents related to the project on his website. And if you missed the AGC project, here's the playlist of videos, and the team joined us for a Hackaday Chat back in 2020.
#radiohacks #space #apollo #apolloguidancecomputer #nasa #restoration #sband #spacecraft #telemetry