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spartan45 last won the day on April 6

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About spartan45

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  1. I agree a craft with interstellar capability seems almost impossible when you consider we seem to be struggling to invent a craft that can take us to another planet in our Solar system; but what if such spacecraft had already been invented else-where?: My imagination was sparked by Chess President Alien Encounter. Alien Abduction President Kirsan Ilyumzhinov https://www.youtube.com/watch?v=QFfebW7K1vw My interest in chess swayed me to include these associated, but off topic youtube videos ROBOT vs Kirsan Ilyumzhinov Moscow 2013 https://www.youtube.com/watch?v
  2. Local solar system travel is all very well, but in the entertaining sci-fi series ‘The Orville’ the star ship uses a ‘Quantum Drive’. I thought that is a great name for an interstellar drive. What if such a drive could propel a craft up to a theoretical speed of say 100,000 times the speed of light? ‘Dr. Schild's Opinion of the Bob Lazar Area 51 Allegations’ Ref: https://youtu.be/K8tuOX2nkH0
  3. I’m not sure which space technologies are about to be produced or invented but below are some concepts that I think sound exciting: The fact of ‘spooky action at a distance’ which might allow for instant distant teleportation:‘Will we ever be able to teleport? - Sajan Saini’ Ref: https://www.youtube.com/watch?v=JMdO5KyjwAw :seems stranger to me than the fiction of StarTrek’s Discovery Spore drive concept, especially after seeing the YouTube clip mentioning mushrooms: ‘Joe Rogan Is Stunned By Paul Stamets Stories About the Multiverse’ Ref: https://www.youtube.com/watch?v=01
  4. Does anyone know if GPs, pharmacies and health centres are prohibited from advertising which of the COVID-19 vaccines are in use, because when I tried to find out at my local surgery which vaccine they would be using both the reception and the GP said they didn’t know if it would be the Pfizer or AstraZeneca product. I now believe they are banned from disclosing this information which seems an unnecessary lack of transparency. I should add that it seems they must disclose which vaccine they intend to use before they inject you with it. Ref: https://www.news.com.au/lifestyle/health/health-
  5. Song, artist, album: 2,000 lockdown 2020 list in a forest of over 60 million songs (YT). Song Artist Album 10thAnniversary Tribute Melodysheep Symphony of Science YT 10538 Overture ELO ELO-Ultimate Collection CD2 (2001) 19 Paul Hardcastle 25 Years Of Number 1 Hits V.7 1999 Charli XCX &Troye S
  6. I like Google and Bing because they give you the number of results related to your question. Of the 3 you have listed I think DuckDuckGO is a good alternative. I was unfamiliar with Qwant and StartPage so I found your post interesting.
  7. I found a video clip recently posted on Utube interesting as it highlights the subject of the blackness of daytime space:- Astronaut Tim Peake’s ‘UFO Sighting’ in Space The Graham Norton Show : Astronaut Tim Peake “In the daytime in space, the space is black, the blackest black you could ever imagine and if see a light it’s another spacecraft coming towards you and we do when cargo vehicles arrive or crew hand-over to come over, you see these lights. On this one day I was looking out and I saw these 3 lights coming over flying in formation and I thought we’re not due a visiting spacecra
  8. Omnifarious, I like your post’s curiosity and determination to find answers, but you have brought up too many points for me to cope with so I thought I’d start with gravity. Gravity is intriguing; the best description of its nature I recently found is from the reference below the summary from that reference titled ‘Does the influence of gravity extend out forever?’ ‘In summary, the influence of gravity only extends to the edge of each gravity group. Beyond that, spacetime no longer behaves like gravity. It's not that the gravitational attraction of a star simply gets too weak to noti
  9. Apollo 14 (1971) Astronaut Alan Shepard describes what he sees after disembarking from the ‘Antares’ lunar module “-Look up in the black sky, there’s no reflection no diffusion and seeing another planet; planet Earth.” “It certainly is a stark place here; I think it’s made all the more stark by the sky being completely black.” REF: The TV documentary ‘Moon Shot’ from the Smithsonian Channel (2020). Apollo 16 (1972) Mission science experiments included The Far Ultraviolet Camera/Spectrograph which took pictures and spectra of astronomical objects in ultraviolet light. The Far Ultravio
  10. As others have already stated the visible universe is finite and just does not have enough stars to light up all of the sky. I did wonder if dust clouds between the stars might be absorbing a lot of the starlight so it wouldn't shine through to us. But apparently scientists tell us that the dust itself would absorb so much energy from the starlight that eventually it would glow as hot and bright as the stars themselves. So I guess dust the dust cloud idea is a non-starter. For a good comprehensive answer to this post’s question, I recommend the reference below. https://spacepla
  11. TomBooth; thank you for posting this interesting topic, very brave of you to challenge both the second law of thermodynamics heat flow statement: ‘Heat flows spontaneously from a substance at a higher temperature to a substance at a lower temperature and does not flow spontaneously in the reverse direction’ and also Carnot’s principle, (An alternative statement of the second law of thermodynamics), ‘No irreversible engine operating between two reservoirs at constant temperatures can have a greater efficiency than a reversible engine operating between the same temperatures. Furthermore, all rev
  12. I appreciate the Sun is a star. I must admit the question and wording ‘at what altitude can stars been seen in daylight?’ does seem a bit weird, but then so does the seemingly black void witnessed by astronauts and visual spectrum cameras above the Earth’s atmosphere from spacecraft and the International Space Station when the Sun is not blocked by the Earth. I am now curious how the Hubble Space Telescope overcomes the problem of seeing stars (other than the Sun which it must not look at because it is so bright it would destroy its sensitive instrumentation) in daylight, all I can think of is
  13. The existence of the Hubble Space Telescope is used as proof that stars can be seen in daylight above the atmosphere. The Hubble ST uses 3 spectral ranges, the near-UV (pivoted at 300nm), Visual light (380nm-740nm) and a limited infra-red (800nm-2500nm) capability. Here’s the thing; can the Hubble ST see stars in daylight using the normal human visual light spectral range (380nm-740nm), or does it have to resort to using the near-ultra violet spectral range ( pivoted at 300nm) to see stars in daylight? The only other optical space telescope I’m aware of is the Chang’e 3 Lunar-based ultraviol
  14. Special relativity means moving clocks run slow. The challenge is which clock is moving, so I hope this experiment (Keating) carried out in the 70’s using an aircraft heading W and then repeating the procedure heading E, while carrying atomic clocks synchronised with a master atomic clock at an observatory in the United States helps make sense of it: The clock on the W bound aircraft was travelling against the East bound spin of the Earth, (rather like a person walking the wrong way along a conveyor and not moving very much), while the master atomic clock in the United States was moved faste
  15. It is my understanding that an additional chip was fitted to the power steering, before leaving the factories, to detect if there was any movement of the steering wheel whilst the car was moving. If there was none, it would put the car into ‘clean’ mode to cheat the rolling road emission test, reverting back to ‘dirty’ mode when it detected steering wheel movement at the end of the test. I was amazed at how simple, but effective, this method of foiling the world’s diesel car emissions regulations appears to have been. We need to be watchful.
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