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KNITS MY FEEDS posted:Might wanna get rid of that hotlink or the mods and whatever website that was from will get mad at you! Cheers i didn't notice it.
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Jul 11, 2013 06:58
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JetsGuy posted:Maybe it's because I'm an astronomer, but the first thing that came to my mind when lost on another planet is to look at the stars and try to figure out how far from Earth you may be. v Even if you are an astronomer, how would you be able to recognize ANY stars if you were located somewhere else in the galaxy? I mean, how would you even start?
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Jul 11, 2013 07:52
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Rewatching Atlantis, just finished McKay and Mrs. Miller. I never noticed it before, but parallel-universe McKay is totally doing the Terminator time-travel pose when he arrives in this reality.
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Jul 11, 2013 08:20
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Snak posted:Even if you are an astronomer, how would you be able to recognize ANY stars if you were located somewhere else in the galaxy? I mean, how would you even start? That's what I was wondering too. I mean sure, if you were dropped on Alpha Centauri or something, there'd probably be enough similarity to take a guess. But if you could've been anywhere in the galaxy, could you even identify a single specific star without either a general sky position or the context of a constellation with the naked eye? Honest question since you're an astronomer, JetsGuy.
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Jul 11, 2013 14:50
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I finished season 1. I really liked how they ended on a more serious note. I thought it was a bit silly that they didn't believe Jackson about his trip to another reality, after seeing O'Neill age 100 years and being revived from death by the Nox, etc. but I guess they have to create drama somehow. I'm a bit surprised how decent the effects look now, they don't look nearly as bad as other 90s shows.
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Jul 11, 2013 14:55
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alg posted:I finished season 1. I really liked how they ended on a more serious note. I thought it was a bit silly that they didn't believe Jackson about his trip to another reality, after seeing O'Neill age 100 years and being revived from death by the Nox, etc. but I guess they have to create drama somehow. I'm a bit surprised how decent the effects look now, they don't look nearly as bad as other 90s shows. I agree; a lot of the effects (even early spaceship stuff) hold up quite good.
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Jul 11, 2013 15:02
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Flame112 posted:Holy poo poo, "It's Good to be King" is such a great episode. Maybourne being a king, Jack taking out a mothership with a puddle jumper, Teal'c being even more badass than usual. Casual use of time travel by the ancients for some reason. It's kind of perfect. That's actually a semi-sequel to Atlantis's "Before I Sleep", where it's suggested that the Lantean scientist Janus - who created the Atlantis-based Time Jumper (which gets destroyed and sinks to the ocean floor when Weir is 10,000 years in the past) - will later follow up on his time-travel research in the Milky Way. The second, Milky Way-constructed Time Jumper shows up then in "Good to be King", and gets used in a big way later in the season.
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Jul 11, 2013 15:45
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Idran posted:That's what I was wondering too. I mean sure, if you were dropped on Alpha Centauri or something, there'd probably be enough similarity to take a guess. But if you could've been anywhere in the galaxy, could you even identify a single specific star without either a general sky position or the context of a constellation with the naked eye? If you're standing on a planet at the other side of the galaxy, the night sky would look nothing like that of Earth. And using constellation to indicate points in space like the show does is a bit silly and one of those things that one just shouldn't think too hard about.
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Jul 11, 2013 15:45
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Raygereio posted:Constellations are just names for groups of stars that appear to be closely together and form patters in Earth's sky. But just because two stars appear to be close together from our point of view, doesn't mean they actually are. An individual star from a constellation can be extremely far away from the other stars in its constellation and can instead be close neighbours with a star from a completely different constellation. Right, I know that. But when you're standing on Earth, the only reason you can distinguish, to pick out a random star, Gamma Draconis from any other K-type star is because of where it appears to be relative to the other stars in the Draco constellation standing on Earth. And if you were on another planet and you didn't know where you were in the galaxy, by the naked eye you probably couldn't identify Gamma Draconis because you wouldn't have the context of the rest of the constellation to identify it specifically. That's why I said that from a nearby star you could probably take a good shot at identifying where you were; most constellations would likely look nearly identical within, say, 20-30 light years of Earth, with just enough change to be able to pinpoint your location with a few calculations even with just looking with the naked eye. I was asking how, without the context of Earth-based constellations as a reference point to identify exactly what star you happened to be looking at, how you'd be able to identify where you were at a random point in the galaxy by looking at the stars with just the naked eye.
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Jul 11, 2013 16:16
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Aatrek posted:That's actually a semi-sequel to Atlantis's "Before I Sleep", where it's suggested that the Lantean scientist Janus - who created the Atlantis-based Time Jumper (which gets destroyed and sinks to the ocean floor when Weir is 10,000 years in the past) - will later follow up on his time-travel research in the Milky Way. The second, Milky Way-constructed Time Jumper shows up then in "Good to be King", and gets used in a big way later in the season. Those kinds of little crossovers are why I'm taking my gf through the show in run order, switching discs around SGA 1-3/SG-1 8-10; those little things, like seeing how SG-1 gets the ZPM for the Daedalus to bring to Atlantis during The Siege, seeing the jumper in It's Good to Be King, etc.
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Jul 11, 2013 16:25
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Idran posted:That's what I was wondering too. I mean sure, if you were dropped on Alpha Centauri or something, there'd probably be enough similarity to take a guess. But if you could've been anywhere in the galaxy, could you even identify a single specific star without either a general sky position or the context of a constellation with the naked eye? Honest question since you're an astronomer, JetsGuy. Surely not "anywhere in the galaxy" The furthest star you can see in our galaxy with the naked eye is about 4,000 light years away. The galaxy is about 100,000 light years across. Zesty fucked around with this message at 20:12 on Jul 11, 2013 |
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Jul 11, 2013 18:22
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Met posted:Surely not "anywhere in the galaxy" Oh haha, right, I didn't even think about that aspect. And honestly I wasn't asking to nitpick, I was just wondering if there was something I wasn't realizing that'd make it possible, since it'd be pretty cool if so. A neat (if useless) skill, that'd be.
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Jul 11, 2013 19:42
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Even if some of the same stars visible from earth were visible on the planet you were on, how would you recognize them? If you were able to recognize a constellation, that would be amazing and might tell you a lot, but otherwise, you don't even know which way is "north" on this planet, much less which way would be north from earth perspective. All of the stars would be difference brightness's to the naked eye because they are difference distances, so some of the same stars may not look the same. even if you had an advanced telescope, you could expect stars to have different red-shifts than normal, which could make them harder to identify. Although if you could positively identify a few stars, using red-shift differentials could (possibly?) help you position yourself if you didn't have points far enough apart for triangulation...
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Jul 11, 2013 21:23
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All the way back in the movie they managed to figure out where their MALP was (even with it being on 
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Jul 11, 2013 21:49
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Wheeze posted:All the way back in the movie they managed to figure out where their MALP was (even with it being on On a 2D screen too. You can't think too hard about the science in Stargate.
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Jul 11, 2013 21:53
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Gatekeeper posted:Rewatching Atlantis, just finished McKay and Mrs. Miller. I never noticed it before, but parallel-universe McKay is totally doing the Terminator time-travel pose when he arrives in this reality. Of course he is, if you were about to use an experimental travel device you'd do the same thing.
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Jul 11, 2013 22:49
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Idran posted:That's what I was wondering too. I mean sure, if you were dropped on Alpha Centauri or something, there'd probably be enough similarity to take a guess. But if you could've been anywhere in the galaxy, could you even identify a single specific star without either a general sky position or the context of a constellation with the naked eye? Honest question since you're an astronomer, JetsGuy. Actually, within a sphere of about 50 lightyears from Earth anywhere from a few to nearly all of the constellations would be recognizable. If you got dropped on a planet orbiting Alpha Centauri the sky would look virtually identical, only the very closest stars would be significantly shifted. You can see for yourself with a free astronomy program like Celestia.
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Jul 11, 2013 23:09
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McSpanky posted:Actually, within a sphere of about 50 lightyears from Earth anywhere from a few to nearly all of the constellations would be recognizable. If you got dropped on a planet orbiting Alpha Centauri the sky would look virtually identical, only the very closest stars would be significantly shifted. You can see for yourself with a free astronomy program like Celestia. This is pretty amusing related anecdote: https://www.youtube.com/watch?v=8B6jSfRuptY
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Jul 12, 2013 00:02
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IRQ posted:On a 2D screen too. You can't think too hard about the science in Stargate. It is based on the Ancient Aliens myth, which The History and Science channel seem to think is legit. I have a question, I skipped S5E13 of Atlantis as soon as I discovered it was a clip show, did I miss anything?
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Jul 12, 2013 16:50
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nah. episode 13 was the bye week. Last 5 mins Woolsey steps up and becomes Mr Atlantis instead of Mr IOA
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Jul 12, 2013 17:01
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In the last 20 seconds of Atlantis some chick shows up to hit on Ronin and pretends like we should know her, who is she?
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Jul 14, 2013 00:05
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Mrens posted:In the last 20 seconds of Atlantis some chick shows up to hit on Ronin and pretends like we should know her, who is she? She was one of the gateroom techs seen throughout s5, then she saved Ronan from Michael's hybrids with some kickboxing.
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Jul 14, 2013 00:17
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McSpanky posted:Actually, within a sphere of about 50 lightyears from Earth anywhere from a few to nearly all of the constellations would be recognizable. If you got dropped on a planet orbiting Alpha Centauri the sky would look virtually identical, only the very closest stars would be significantly shifted. You can see for yourself with a free astronomy program like Celestia. This is largely the point I was trying to make. Yes, for those of you asking, if you're pretty much anywhere in the galaxy, the constellations would look completely different which would make identifying even individual stars by eye almost impossible without magic space GPS. The reason I brought it up is it is a gradual process due to the three dimensional nature of constellations. At a rudimentary level you may find out you're very close to Earth at the very minimum. If you're a bit away from Earth you may see some recognizable ones. I guess just my thought, in desperation, would be a curiosity as to how fat away I might be. In the case I look up and see the exact same constellations, I might even time the sidereal day on the "ice planet". The fact that the constellations matched and that a sidereal day would the exact same would lead me to the conclusion I was on Earth. Why? Because it would be insanely unlikely that I not only am in a planet close enough to Earth to have the same stars, but the same sidereal day too? The universe would literally have to hate me. Not tht I know what they'd do with the short range radios. Maybe try to call McMurdo?
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Jul 14, 2013 02:37
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MacGyver should have built a Radio Telescope out of bubblegum wrappers and paper clips so Carter could use pulsar mapping to get a fix on their location. God I am so loving sick of all the lazy writing in sci-fi shows.
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Jul 14, 2013 03:48
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JetsGuy posted:Not tht I know what they'd do with the short range radios. Maybe try to call McMurdo? Well if you knew you were on Earth, you'd immediate guess why dialing Earth wasn't working for you. Then you'd just furiously dial some other world. Of course, if the show only took place 30 years in the future, the military might finally have modernized GPS equipment, including chips in the radios. While useless 99.9% of the time to Stargate teams, it would be something of a giveaway in this case.
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Jul 14, 2013 04:13
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Yes, it's like a lava lamp.
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PittTheElder posted:Well if you knew you were on Earth, you'd immediate guess why dialing Earth wasn't working for you. Then you'd just furiously dial some other world. Not really... O'NEILL "What if we're on Earth?" CARTER "We can't be on Earth, the GPS isn't getting a signal." PAN UP to show the thick ice walls and how far away the surface is above.
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Jul 14, 2013 04:57
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Not so fast sir. The majority of the signal loss from EM signals on that band are actually in the transition between the air and whatever other medium we're talking about. The water itself tends not to be such a huge problem; after all, the atmosphere is loaded with water. One of the reasons all the GNSS systems use that band is because water doesn't respond to it. Depending on how solid the wall of ice actually was, it might only need to do two transitions, which would make your signals easily trackable. If your tracking loops start up at all, that's all the evidence you need. Also, Carter climbs to the surface. 
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Jul 14, 2013 06:38
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Okay, the GPS device itself doesn't work in the extreme cold. Happy? 
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Jul 14, 2013 06:45
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Luigi Thirty posted:Okay, the GPS device itself doesn't work in the extreme cold. Happy? It is just a tv show and you should really just relax. LA LA LA
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Jul 14, 2013 06:47
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PittTheElder posted:Not so fast sir. The majority of the signal loss from EM signals on that band are actually in the transition between the air and whatever other medium we're talking about. The water itself tends not to be such a huge problem; after all, the atmosphere is loaded with water. One of the reasons all the GNSS systems use that band is because water doesn't respond to it. Depending on how solid the wall of ice actually was, it might only need to do two transitions, which would make your signals easily trackable. If your tracking loops start up at all, that's all the evidence you need. Transition through the damaged gate causes a localized EMP that fries all their equiptment. [TECHNOBABBLE] fulfills [PLOT REQUIREMENT], now watch me shoot this alien.
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Jul 14, 2013 07:15
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Budget dictated that people who go off world don't need the GPS locators. You know how expensive that Spacegate is to keep on? For the same reason, they cut anything that isn't a dessert from the mess hall's menu.
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Jul 14, 2013 07:20
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Met posted:For the same reason, they cut anything that isn't a dessert from the mess hall's menu. This gave me a laugh. I so want to eat at their mess hall.
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Jul 15, 2013 14:00
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Don't they usually have some idea of where they are going before they even send the MALP through?
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Jul 15, 2013 16:39
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I don't think so. Pretty sure they just have a big list of gate addresses from that old gate traveller guy and then from Jacks brain.
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Jul 15, 2013 17:08
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Met posted:Budget dictated that people who go off world don't need the GPS locators. You know how expensive that Spacegate is to keep on? This would be the real reason they wouldn't have such things. I was originally trying to make a bad joke about how outdated military GPS receivers are, that's all.
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Jul 15, 2013 18:51
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MrBling posted:I don't think so. They had the list from Abydos and the list from the Ancient repository.
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Jul 15, 2013 19:21
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SpookyLizard posted:Don't they usually have some idea of where they are going before they even send the MALP through? Surely they don't risk losing an expensive MALP without first doing a rudimentary check if anything is even materializing at the other end. Therefore, I like to think that there's a guy at SGC whose job is to dial potential gates all night long. If a gate address works, he saunters down to the gate room, puts a rubber band around a dollar store walkie talkie, chucks it through the gate, and then checks a box on a clipboard if it squawks. On his way back up the stairs, he stops by the giant closet full of walkie talkies and batteries to grab another armful.
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Jul 15, 2013 19:21
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alg posted:The episode with the Mongols and the kid that Carter didn't want to explode were both pretty lovely but everything else has been fun. Do they ever visit civilizations that are technologically advanced? alg posted:I picked up this series on Amazon when it was on sale last week for $50. I'm enjoying it as a 90s cheesy adventure show. As a trekkie, it's pretty weird to see a team just go from planet to planet loving poo poo up instead of observing a Prime Directive. MadScientistWorking fucked around with this message at 19:32 on Jul 15, 2013 |
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Jul 15, 2013 19:25
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Luigi Thirty posted:They had the list from Abydos and the list from the Ancient repository. And later in the show they figure out how to grab past addresses from off world DHDs.
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Jul 15, 2013 20:17
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MadScientistWorking posted:Surprisingly, the Mongol episode was written by the same person who wrote the racist TNG episode that the cast members hated. To be fair, a lot of the blame for the Trek episode really belongs to the director. The writer didn't say "make 'em all black" -- that was a decision made by the director. If they were white, or ethnically diverse, it would have just been another episode.
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Jul 15, 2013 21:12
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