Space Myths | SCI CODE

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1. The term "microgravity" is used by NASA to describe the situation in a spacecraft where the vehicle still has some, although very small, effect on the passengers. A better phrase to use in your video would be "free-fall"
2. Inaccurate. Gravity is relative. Near Zero Gravity exists ( also called Microgravity ), but there is also, relative to our experience inside a spacecraft, a point between the Earth and the Moon where the Gravitational Pull of both cancels out almost all Gravity; at that point there is, relative to our experience, practically no Gravity! Aboard the ISS Gravity keeps pulling us down to Earth....which is like perpetual free-fall. Okay. You alluded to all that.Now: as for Sound Travelling in the near-vacuum of Outer-Space: there is an effect whereby sound of some amount will be heard aboard one spacecraft if the exploding spacecraft is nearby enough. This will be due to the fact that Electro-Magnetic shockwaves will reach the hull and then that will translate into some sound. But generally speaking you were right. Also: laser beams will not be visible unless there are particles of dust or a volatile gas between the source firing the laser heading outwards in the concentrated direction of the beam. You did not mention that. Okay; next: current Hard ( Serious ) Scientific Research results already indicate that no matter how advanced our inter-planetary and inter-stellar space travel technologies will become we will never achieve the kind of speeds that you hope for in the video! We will always be limited by various existing factors. Space is only a Relative Vacuum and not a Total Emptiness or Void. There is no such thing as a Total Vacuum, and even what is "vacuum" contains Electromagnetic Radiation Wavicles ( Particles that also act and 'look' like Waves ). Now: here's something very interesting about Outer Space: most people think that Outer Space must be nauseating to look out to from inside a Spacecraft. Reality is that our brains optical spatial perception cannot comprehend any distance in space so large! On their way to the Moon the Apollo Astronauts simply felt like they were travelling inside a long dark tunnel with little white lights. And here's another interesting thing: while it takes around 8 minutes for a Photon to travel from the 'surface' of the Sun to our eyes: it takes much less time for shadows to move! Shadows move even faster! Because Photons are Wavicles they travel in streams behind one another! Thus blocking the stream will rapidly stop the flow! And the relationship between Electromagnetic Radiation and Gravity is Incredibly Interesting and still not entirely understood. Anyway; hope to hear back from you. Good work, overall.
3. This is all common sense, so nothing groundbreaking, but the real issue here is that you REALLY don't know how to talk with your hands. It's so forced and robotic it's heavily distracting. It's like a bad politician.
4. This guy should have way more subscribers... he's awesome !!!
5. What's the distance between meteors in saturns rings
   
6. this has so many amazing science fiction references!!!!!!
7. Snail riding turtle epic win.
8. Whether there's sound in space depends on what you consider sound. Technically you could argue that there's a lot of sound in space, from solar winds to background noise from the big bang, we just need special instruments to hear it.
9. Thanks Phil Plait. 
10. I actually liked it for silent space battle.
11. What if I told you that... the sound we hear in cinematic space battles, is the sound heard in the ships themselves.
12. One of the biggest misconceptions is that space is cold. It's not. Heat is, in essence, movement of subatomic particles. Without those particles, you don't have any heat or cold. There are loose gas particles pretty much all over space ofcourse, but spread so thin that they could just as well not exist. This means that there is no heat convection. Which means that the only way to get rid of heat is to radiate it in infrared radiation, which is the least efficient form of heat loss there is. Meaning that while you eventually reach the temperature close to absolute zero if you're stranded in space, this takes a very long time. So no flash-freezing like you see in movies. This also means that spaceships need to be designed to radiate heat effectively, or the collective heat of the ship's equipment would roast the crew alive.
    
    Also, people don't explode in space, either, but that's another story.
13. See Chris Hadfield on sound in space and Adam Steed's comment about the accuracy of the movie "Gravity". Apparently 2001 was an outstanding representation of being in space. Sound moves through solid objects and anything with an atmosphere, so in your space suit, you can hear yourself. In a ship you can hear others. You can hear/feel through objects you are in contact with, etc.
14. Also, while we're being pedantic, it's inaccurate to use a clip from "Serenity" when talking about how we can't travel between stars or galaxies quickly.  The Serenity movie and the Firefly series are set within a single star system (or several very close star systems, like tens of AU), depending on your point of view.
15. As far as sound in space, I'm with J. Michael Straczynski on this one: it's like background music, to help set the mood and let you relate to the scene.  There's no orchestras in the Serengeti, either, but that doesn't mean "Out Of Africa" should have been without music.
16. Sound doesn't travel in space, but explosions will send out shockwaves of other energies and particles which will impact your ship and create resonance.  Advanced propulsion systems might do the same thing, so you might still "hear" other ships nearby.
    
    Also, it's conceivable that future intestellar spacecraft UI designs would make use of the relative silence of space and have Audio User Interfaces (AUI's) that would simulate expected sounds in order to communicate more information to operators than could be conveyed with simply GUI's.
17. The premise that there is no sound in space, is, to be blunt, scientifically devoid and very much bunked. Sound waves are compression waves in nature, any area with a sufficiently high concentration of molecules can be compressed and thus there is sound because compression waves can and will propagate through things like nebulae. So much for sci code.
18. Gravity, the movie was probably the most accurate Sci-Fi this year, even if it got some things wrong. 
19. for a lot of sci-fi you have to ignore the sci part of it and i don't mind that, but what i really can't ignore is that when it's not self-consistent.  a trip to pluto takes 2 weeks because the general public "knows" this is far, but a trip to a nearby star takes 3 weeks because, well, the average person knows that a star is further away still.  ugh.
20. It's the wacky waving inflatable arm flailing tube man!
    
    And seriously... who actually did not know that there is no sound in space, that gravity does not cease to exist and that light takes time to travel from one place to the other? Who exactly is this video aimed at??