Comments by "Yazzam X" (@yazzamx6380) on "Motherboard" channel.

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  21.  felix mendez  d) Completely untrue. Here's what the scientist Dr Van Allen said about the radiation belts named after him (you know, the discoverer who was the leading expert on the radiation belts until his death in 2006); Dr Van Allen quote 1: "A person in the cabin of a space shuttle in a circular equatorial orbit in the most intense region of the inner radiation belt, at an altitude of about 1000 miles, would be subjected to a fatal dosage of radiation in about one week." In other words, it would take ONE WEEK inside the most intense region of the belts to receive a fatal dose of radiation. That is why low Earth orbit spacecraft like the ISS stay as far below the belts as possible, because astronauts will be on board for weeks or months (and some for over a year!). If the ISS was at an altitude of 1000 miles instead of 250 miles, then the astronauts would receive levels of radiation that would put their lives at risk. Dr Van Allen quote 2: "The outbound and inbound trajectories of the Apollo spacecraft cut through the outer portions of the inner belt and because of their high speed spent only about 15 minutes in traversing the region and less than 2 hours in traversing the much less penetrating radiation in the outer radiation belt. The resulting radiation exposure for the round trip was less than 1% of a fatal dosage, a very minor risk among the far greater other risks of such flights." In other words, Dr Van Allen confirms that the Apollo astronauts passed through the weaker areas of the belts in around 2 hours, hence the radiation wasn't a problem. So as Dr Van Allen confirmed about the Van Allen radiation belts named after him, they are not a problem to pass through in just a few hours (as they did during the Apollo missions), but are a problem to remain inside constantly for weeks.
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  35.  Whistfull Westerner  - You said "oh I have a car that proves you wrong, when it is moving I feel it." Thank you for proving your ignorance so perfectly :-) If your car (with windows closed) was travelling on a perfectly smooth road with no dips or rises, then you wouldn't feel it (vibration of the engine aside). Whether you're at 20 mph, 50 mph or 100 mph etc, you couldn't tell without the feedback of what your eyes and ears are telling you. Travel in a bullet train at 200 mph and you wouldn't feel it. Travel in a passenger plane cruising at 500+ mph and you wouldn't feel it. Travel in Concorde (back in the day) at 1330 mph and you wouldn't feel it. What you feel are any changes in speed, hence acceleration/deceleration of the craft such as take off and landing, pressing the accelerator or hitting the brakes etc, and changes in speed away from the general direction of the craft, such as bumps and dips and rises on a road, turbulence in the air, etc. How can you not know that? You said "so when you are in a car travelling 60 you feel nothing, only the acceleration to say 70 and then nothing." Acceleration means an INCREASE in speed, deceleration means a DECREASE in speed. Every time you change the speed of your car you feel it, where the faster you change the speed the more you feel it (accelerate quickly and you're pushed back into your seat, brake suddenly and you're thrown forward in your seat). How can you not know that while claiming to have an Engineering degree (I have a Mathematics and Computing degree btw). I shouldn't be here explaining that to you, YOU should be here explaining that to others given your claimed qualifications.
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  48. ​ @NIRVANAmat  - But surely psychology requires knowing the context and circumstances first, rather than making assumptions? :-| For example; 1) Many people assume this press conference occurred just hours or days after they returned from the moon and therefore expect to see that reflected in the astronauts. But this press conference actually occurred 3 WEEKS after they returned from the moon. 2) The astronauts were in quarantine for most of those 3 weeks, due to a policy at the time to safeguard mankind against the possibility of some kind of space virus being brought back to Earth (they scrapped that policy soon afterwards). 3) Those astronauts were ALL ex test pilots who risked their lives pushing experimental aircraft to its limits, at a time when an average of 1 test pilot per week was killed in the USA. Hence they were used to keeping their emotions under control and remaining calm and professional during the most stressful situations (that's why they were chosen for the job in the first place!). 4) This press conference was for the 3 astronauts to answer serious questions from experts in their fields, including from astronomers and scientists and engineers, and hence they were effectively at work here. Notice all the technical details and jargon mentioned. So this wasn't a press conference for the general public. 5) How happy does Neil Armstrong and the other astronauts look while in quarantine before that press conference? www.youtube.com/watch?v=j6P1wBNHqnU How happy does Neil Armstrong appear in front of the troops in Vietnam? www.youtube.com/watch?v=qSKCaxx58Bg&t=385s So the idea that there's something wrong with the Apollo 11 astronauts during the press conference is based upon false assumptions and false expectations my friend :-)
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