Hevach
Senior Member.
This one's pretty far out there, and thus doesn't hold up to scrutiny, but I'm bored and this isn't my first Rosetta/Philae debunk rodeo.
The first full article:
http://theguttertrash.com/2014/11/2...rosetta-space-probe-philae-landing-is-a-hoax/
However, Philae wasn't alone. It was carried to 67P by Rosetta, which had sufficient propellant for several orbital adjustments and orbital insertion at the comet. Elsewhere in the article also says Rosetta could not have gotten there, which again is technically true, were it not for the fact that Rosetta was also not alone.
This is the basic setup of an Ariane 5 rocket. Two solid fuel boosters, two stages. Satellite 2 can be replaced with an additional booster if that's insufficient. This isn't exactly the heaviest rocket in the world, but it is fully capable of putting a probe anywhere in the inner solar system.
Point 2: Again a technically true thing, but with silly conclusions.
Modeling did assume the comet was a regular shape, because we did not know its shape. However, its shape does not significantly effect its trajectory. Irregular objects can follow incredibly complex orbits, but only when close enough to be affected by tidal differences in gravity. 67P is so far from the sun (and the sun itself so large) that there is no such tidal effect unless it gets incredibly close (as with a sungrazing comet), and its trajectory is predictable and regular. Once in orbit, Rosetta's trajectory is not, however. Failure to achieve orbit or failure to find a stable orbit were considerations made, and there were contingency plans for how to get the most science done in such cases.
As to the appearance of the comet, there is absolutely nothing un-cometlike about it. The pictures of its surface are far and away the best pictures we have of any comet, but are very similar to those of the runner up Tempel 1, visited by Deep Impact. Its irregular shape is not unusual, either. 19P/Borrelly, visited by Deep Space 1, and 103P/Hartley, visited by Deep Impact, share the two lobe shape.
Point 3: Again, technically true. However, real time human control is not necessary. A major reason why space probes take so long to do something - why Curiosity takes weeks to cross the equivalent of a back yard and why Rosetta spent months planning for the Philae landing - is that everything has to be calculated and programmed ahead, to be done automatically by the probe at the appropriate time.
This is a very delicate process, and mistakes in this process are the biggest reason for unmanned probes being lost. It is, quite literally, rocket science.
The second full article:
https://truthernews.wordpress.com/2014/11/15/10-reasons-why-the-rosetta-comet-landing-was-a-hoax/
Taylor actually puts some more thought into his theory. Just the bullet points:
Point 1: This is sad, to be honest. Video footage takes a lot of bandwidth to transmit, and its scientific value isn't worth it to most missions. Most "video" you see from probes is fake anyway, assembled from a series of still images. This is why they seem to stutter, as the images aren't taken at fixed intervals like with a movie camera.Neither Philae nor Rosetta had the instruments to take this video. It could have been greatly helpful in the early hours of the mission, since they could have found the lander sooner.
Point 2: I covered this above, but programmed maneuvers are a real thing. There's a lot of wait-and-see involved, but it's far from guess work. It is, again literally, rocket science.
Point 3: Now this is just silly.
Comets do erode as they lose ice and gas, but this doesn't make them aerodynamic, as the composition of the comets we've observed closely tips much more towards the "icy dirtball" scale than the classic image of a "dirty snowball."
Point 4: This is the classic Apollo denial claim, and the same is true here. Here's an image, used as evidence:
This was made at some distance before the initial encounter. Stars are just barely visible, but sunlight reflected from the comet is so bright it overwhelms the sensors. Rosetta is now much closer still, but with its instruments adjusted to get useful images of the comet, meaning starlight no longer registers.
Point 5: This is basically the same argument, that any picture of the comet should either be overwhelmingly bright or completely dark, ignoring even the most basic concepts of photography. All light in the images is natural sunlight (a "flash" would need to be incredible to do this, a magnesium flare the size of a freight train couldn't evenly illuminate 67P). The sun's light is still quite bright at 310 million miles.
Point 6: Actually, there is a vapor trail. It was first detected several months ahead of rendezvous, in June. It's weakly visible in the image used as proof in point 4, in fact.
However, a comet's tail is a quite sparse thing up close. It's about as dense as a laboratory vacuum, and that's an active comet when it really gets going. 67P has not approached close enough to the sun to really get going yet, and is not a particularly active comet when it does (this is in part why it was chosen from several shortlist candidates). However, with the Philae anchor failing there is worry the lander could be ejected from the comet when it comes around perihelion next year. There's not too much worry about Rosetta, but there is a reason its official mission is slated to end before that - it's expected to survive, but if it's damaged or ejected from orbit the mission will still go down as a success.
Point 7:
That's a bit of a run around, though, since 67P is not a particularly active comet and has not entered the active part of its orbit yet, so not only is its trail cold, it can hardly be said to exist at all.
The speed involved is irrelevant, only relative speed. Philae's speed relative to the comet is 0. It had to accelerate to 84,000 mph to get there, but that sounds a lot less impressive when you remember it was already going 66,600 mph when we built it on Earth, just like I am here in my chair and you are there in yours. Our speed relative to Earth is 0, which is why it's easy for us to stay in our seats while traveling at 66,600 mph, just like Philae having very little relative speed made it possible for it to balance.
As for the legs, Philae is shaped closer to this kind of office chair than a kitchen chair. If you put something under one of these chairs, it'll prop up on two with the rest in the air, and if you don't tip it too far it'll sit like that (I don't recommend sitting on it yourself). This is how Philae is resting. Philae may have weighed 220 pounds on Earth, but on 67P it weighs less than a sheet of paper. You could prop it up like this on a toothpick.
Point 8:
Point 9:
This has become kind of a fun thing space programs do, Curiosity and Cassini also have twitter feeds being posted "in-character." It's basically free and people really seem to enjoy it (Philae's landing trended higher than Kim Kardashian's buttcrack). It's no different than any PR stunt where a car or video game console or cat has an in-character twitter feed.
It's a cruel trick of radio that communicating a long way is easier in certain ways than communicating close up. Rosetta only needs to keep its dish more or less pointed at Earth, and we've got several instruments on the ground and in orbit listening to make sure we catch what it sends, the beam is wide enough to hit all of our local space, and it would take a whole planet to block it. If you had the proper instruments and knew the format, you could actually intercept it yourself, I'd be surprised if there's even any security beyond a semi-proprietary closed format. This has been done before - it's how private scientists took control of the decommissioned ISEE 3 probe, and it's how a British newspaper managed to be the first to publish images from a Russian lunar lander.
Wi-Fi, on the other hand, has the key shortcoming that it actually does have a whole planet (and, more practically, all the stuff attached to it) in the way. Wi-Fi also attempts to be two-way and real-time, both things space probes do not do, instead working closer to walkie-talkie rules and using careful calculations to get around the time delays involved.
There's a good reason Philae didn't have batteries to last more than a few hours. Batteries are heavy, solar panels are light. Philae was designed to recharge its own batteries and run off the panels, so it should only need battery power during the comet's roughly six hour night. Unfortunately with the lander in the incorrect location, it isn't getting sufficient sunlight to do that.
Point 10: I just... I can't...
NASA's Asteroid Initiative is seeking to bring an asteroid on the order of 10-20 meters wide into Lunar orbit, where we can study it manned or unmanned at our leisure over many years. The capture vehicle at launch would be the largest rocket we ever built - bigger than the Saturn V, N1, Energia, or Delta Heavy, and this is for an asteroid half the diameter and an eighth the mass of the Chelyabinsk meteor, and calls for an asteroid that is already on course for an encounter, and would still need several years to intercept the asteroid and adjust its orbit.
To do the same for a body the size of 67P, with similar favorable conditions, would require 800 million such record setting rockets. Skipping the last insertion burn in favor of what I'll call "catastrophic lithobraking" will save you quite a bit, but you're still talking about a feat that would require thousands of times more rockets than humans have ever made for any reason combined. It would take years to reach the asteroid, and years to adjust its orbit.
With only 24 shopping days left until Christmas, so there's definitely not enough 2014 left for this theory to hold water.
The first full article:
http://theguttertrash.com/2014/11/2...rosetta-space-probe-philae-landing-is-a-hoax/
Point 1: This is technically true, as the claim is only talking about Philae itself. Philae only had a tiny amount of propellant with a top thruster to help set it in place, and even that malfunctioned leaving it only to free fall.External Quote:
The evidence shows that:
- The technical specifications and of the Philae Spacecraft are barely sufficient to propel and manoeuvre the device to land on a stationery object in zero gravity. Landing the probe on a rock travelling at 80,000 miles an hour is technologically and scientifically impossible.
- The so-called modelling released by the ESA is incomplete and selective. Our team of independent scientists noted that large extracts of the modelling were either missing or had been redacted. Notable omissions either censored or deleted for security or legal reasons were in relation to the speed and trajectory of the 67P/Churyumov–Gerasimenko. Our team determined that calculations released by ESA were based on the comet being of circular or oval shape, and therefore having a predictable speed and trajectory. However, this is clearly not the case with the 67P/Churyumov–Gerasimenko comet which exhibits an asymmetrical and abstract shape. In short, the comet is very un-comet like which suggests that its entire likeness was fabricated, or enhanced by CGI at least for the purposes of public broadcast.
- Significantly, the mission was reportedly executed from ESA Mission Control atESOC in Darmstadt, Germany. Considering that the comet in question is approximately 310,000,000 miles away from Earth, any real-time communication with Philae in respect to its navigation and precision landing on the comet which is traveling 84,000 MPH (23.6 miles per second) would have had to occur faster than the speed of light (i.e., 671,000,000 miles per hour). Even if the ESA was able to communicate with Rosetta and Philae at the speed of light (which they cannot), there would be an approximant 25-27 minute lag between operational manoeuvres emanating from Germany and real-time manoeuvres in deep space (i.e., this is calculated by dividing 310 million by 671 million).
However, Philae wasn't alone. It was carried to 67P by Rosetta, which had sufficient propellant for several orbital adjustments and orbital insertion at the comet. Elsewhere in the article also says Rosetta could not have gotten there, which again is technically true, were it not for the fact that Rosetta was also not alone.
This is the basic setup of an Ariane 5 rocket. Two solid fuel boosters, two stages. Satellite 2 can be replaced with an additional booster if that's insufficient. This isn't exactly the heaviest rocket in the world, but it is fully capable of putting a probe anywhere in the inner solar system.
Point 2: Again a technically true thing, but with silly conclusions.
Modeling did assume the comet was a regular shape, because we did not know its shape. However, its shape does not significantly effect its trajectory. Irregular objects can follow incredibly complex orbits, but only when close enough to be affected by tidal differences in gravity. 67P is so far from the sun (and the sun itself so large) that there is no such tidal effect unless it gets incredibly close (as with a sungrazing comet), and its trajectory is predictable and regular. Once in orbit, Rosetta's trajectory is not, however. Failure to achieve orbit or failure to find a stable orbit were considerations made, and there were contingency plans for how to get the most science done in such cases.
As to the appearance of the comet, there is absolutely nothing un-cometlike about it. The pictures of its surface are far and away the best pictures we have of any comet, but are very similar to those of the runner up Tempel 1, visited by Deep Impact. Its irregular shape is not unusual, either. 19P/Borrelly, visited by Deep Space 1, and 103P/Hartley, visited by Deep Impact, share the two lobe shape.
Point 3: Again, technically true. However, real time human control is not necessary. A major reason why space probes take so long to do something - why Curiosity takes weeks to cross the equivalent of a back yard and why Rosetta spent months planning for the Philae landing - is that everything has to be calculated and programmed ahead, to be done automatically by the probe at the appropriate time.
This is a very delicate process, and mistakes in this process are the biggest reason for unmanned probes being lost. It is, quite literally, rocket science.
The second full article:
https://truthernews.wordpress.com/2014/11/15/10-reasons-why-the-rosetta-comet-landing-was-a-hoax/
Taylor actually puts some more thought into his theory. Just the bullet points:
(bold added for clarity)External Quote:
1. No Video Footage
2. No Real-time communication possible
3. No aerodynamic shape to the comet
4. No stars in background
5. Impossible lighting
6. No vapor trail from the comet
7. No space sheer
8. Suspicious naming of the probes
9. Technological contradictions
10. What is this seriously I don't even
Point 1: This is sad, to be honest. Video footage takes a lot of bandwidth to transmit, and its scientific value isn't worth it to most missions. Most "video" you see from probes is fake anyway, assembled from a series of still images. This is why they seem to stutter, as the images aren't taken at fixed intervals like with a movie camera.Neither Philae nor Rosetta had the instruments to take this video. It could have been greatly helpful in the early hours of the mission, since they could have found the lander sooner.
Point 2: I covered this above, but programmed maneuvers are a real thing. There's a lot of wait-and-see involved, but it's far from guess work. It is, again literally, rocket science.
Point 3: Now this is just silly.
Nothing about this is true in the least. There isn't enough dust in the solar system to erode a body moving at any speed, and radiation would take so long to do so the same that entropy becomes a consideration before radiation erosion.External Quote:Considering that real comets such as Halley's Comet are flying through space at an extremely high rate of speed, they tend to become rather aerodynamic over time due to the cosmic dust and cosmic rays (i.e., high-energy radiation) the encounter while careening though space.
Comets do erode as they lose ice and gas, but this doesn't make them aerodynamic, as the composition of the comets we've observed closely tips much more towards the "icy dirtball" scale than the classic image of a "dirty snowball."
Point 4: This is the classic Apollo denial claim, and the same is true here. Here's an image, used as evidence:
This was made at some distance before the initial encounter. Stars are just barely visible, but sunlight reflected from the comet is so bright it overwhelms the sensors. Rosetta is now much closer still, but with its instruments adjusted to get useful images of the comet, meaning starlight no longer registers.
Point 5: This is basically the same argument, that any picture of the comet should either be overwhelmingly bright or completely dark, ignoring even the most basic concepts of photography. All light in the images is natural sunlight (a "flash" would need to be incredible to do this, a magnesium flare the size of a freight train couldn't evenly illuminate 67P). The sun's light is still quite bright at 310 million miles.
Point 6: Actually, there is a vapor trail. It was first detected several months ahead of rendezvous, in June. It's weakly visible in the image used as proof in point 4, in fact.
However, a comet's tail is a quite sparse thing up close. It's about as dense as a laboratory vacuum, and that's an active comet when it really gets going. 67P has not approached close enough to the sun to really get going yet, and is not a particularly active comet when it does (this is in part why it was chosen from several shortlist candidates). However, with the Philae anchor failing there is worry the lander could be ejected from the comet when it comes around perihelion next year. There's not too much worry about Rosetta, but there is a reason its official mission is slated to end before that - it's expected to survive, but if it's damaged or ejected from orbit the mission will still go down as a success.
Point 7:
Gasses coming off a comet are not white hot, and the surface of one is not fiery. In a vacuum water and the other elements in a comet's ice want to be in any phase except liquid - they'll transition directly from solid to gas far below their boiling points, potentially below their freezing points (well, not actually - their freezing point however might be different in a vacuum than what's typically listed in a textbook for 1 atmosphere). The vapor trail (which is barely active this far from the sun) is very cold. The glow seen from Earth is reflected sunlight.External Quote:Considering that the 67P/Churyumov–Gerasimenko comet is allegedly traveling at 84,000 MPH, it's extremely unlikely that a 220 pound spacecraft that's only a few feet tall (3.3 x 3.3 x 2.6) would be able to withstand the white hot gasses erupting from the comets fiery surface. In other words, the Philae spacecraft would never be able to get close to the speeding comet let alone attach itself for an extended period of time. According to report dated November 13, 2014, Philae was only able to get two of its three legs in contact with the comet yet it had no problem staying upright or attached. A household chair cannot stand on three legs yet this spacecraft is standing on two while traveling through space?
That's a bit of a run around, though, since 67P is not a particularly active comet and has not entered the active part of its orbit yet, so not only is its trail cold, it can hardly be said to exist at all.
The speed involved is irrelevant, only relative speed. Philae's speed relative to the comet is 0. It had to accelerate to 84,000 mph to get there, but that sounds a lot less impressive when you remember it was already going 66,600 mph when we built it on Earth, just like I am here in my chair and you are there in yours. Our speed relative to Earth is 0, which is why it's easy for us to stay in our seats while traveling at 66,600 mph, just like Philae having very little relative speed made it possible for it to balance.
As for the legs, Philae is shaped closer to this kind of office chair than a kitchen chair. If you put something under one of these chairs, it'll prop up on two with the rest in the air, and if you don't tip it too far it'll sit like that (I don't recommend sitting on it yourself). This is how Philae is resting. Philae may have weighed 220 pounds on Earth, but on 67P it weighs less than a sheet of paper. You could prop it up like this on a toothpick.
Point 8:
Uh, yeah, no, it's named after *the* Rosetta Stone. Philae is named after the Philae Obelisk, the less known half of the same set that first translated Egyptian hieroglyphics. There's conflicting claims about why these were chosen, and they're probably all true since these things are named by committee and the committee members don't have to like it for the same reason. My personal favorite is that the Rosetta Stone and Philae Obelisk solved a puzzle that had been deemed impossible by linguists of the time, namely translating ancient Egyptian. The spacecraft Rosetta and Philae have done something that, while not claimed to be impossible, other agencies have abandoned in the planning phase.External Quote:the name Rosetta was evidently chosen because of its likeness to Rosetta Stone, an international language-based software company
Point 9:
Actually, Rosetta and Philae are not tweeting at all. Some random humans on Earth, probably unpaid interns working on their degrees and wondering when they get to do science, are tweeting cutesy quips on their behalf from the comfort of a cubicle.External Quote:If reports are to be believed, Rosetta and Philae are now "Tweeting" from deep space. We can barely get reliable cellular and Wi-Fi service on Earth yet these spacecraft are Tweeting in real time from 310,000,000 miles away? Even stranger, it was reported on November 15, 2014, that Philae is "asleep" after its batteries ran out. One would think that the ESA would have installed batteries that last longer than 72-hours but clearly that's not the case. Chances are it's a convenient way of ending the conversation about the highly improbable comet landing before it even gets started. Needless to say, the technological contradictions surrounding the mission are red flags which suggest that the event never transpired in reality.
This has become kind of a fun thing space programs do, Curiosity and Cassini also have twitter feeds being posted "in-character." It's basically free and people really seem to enjoy it (Philae's landing trended higher than Kim Kardashian's buttcrack). It's no different than any PR stunt where a car or video game console or cat has an in-character twitter feed.
It's a cruel trick of radio that communicating a long way is easier in certain ways than communicating close up. Rosetta only needs to keep its dish more or less pointed at Earth, and we've got several instruments on the ground and in orbit listening to make sure we catch what it sends, the beam is wide enough to hit all of our local space, and it would take a whole planet to block it. If you had the proper instruments and knew the format, you could actually intercept it yourself, I'd be surprised if there's even any security beyond a semi-proprietary closed format. This has been done before - it's how private scientists took control of the decommissioned ISEE 3 probe, and it's how a British newspaper managed to be the first to publish images from a Russian lunar lander.
Wi-Fi, on the other hand, has the key shortcoming that it actually does have a whole planet (and, more practically, all the stuff attached to it) in the way. Wi-Fi also attempts to be two-way and real-time, both things space probes do not do, instead working closer to walkie-talkie rules and using careful calculations to get around the time delays involved.
There's a good reason Philae didn't have batteries to last more than a few hours. Batteries are heavy, solar panels are light. Philae was designed to recharge its own batteries and run off the panels, so it should only need battery power during the comet's roughly six hour night. Unfortunately with the lander in the incorrect location, it isn't getting sufficient sunlight to do that.
Point 10: I just... I can't...
Ok, I'm not going to touch most of that, except to say that carrying out this asteroid attack would require not just landing on an asteroid first (something the article claims we cannot do), but landing something much, much, much larger than Philae on one.External Quote:10. 2014 Asteroid Attack
Since the public can't tell the difference between an asteroid or a comet, the landing of Philae on the 67P/Churyumov–Gerasimenko comet was orchestrated by the CIA (a global entity) in order to condition the masses for the man-made asteroid attack planned for 2014. This particular notion was foreshadowed on August 19, 2014, when the popular science blog "IFL Science" published a report entitled "Graphic Shows The Size Of Rosetta's Comet" which ominously depicted a photo of the 67P comet atop Los Angeles, California. As former U.S. President Franklin D. Roosevelt once said, "In politics, nothing happens by accident. If it happens, you can bet it was planned that way." The alleged comet landing is no different as it evidently has sinister ulterior motives.
NASA's Asteroid Initiative is seeking to bring an asteroid on the order of 10-20 meters wide into Lunar orbit, where we can study it manned or unmanned at our leisure over many years. The capture vehicle at launch would be the largest rocket we ever built - bigger than the Saturn V, N1, Energia, or Delta Heavy, and this is for an asteroid half the diameter and an eighth the mass of the Chelyabinsk meteor, and calls for an asteroid that is already on course for an encounter, and would still need several years to intercept the asteroid and adjust its orbit.
To do the same for a body the size of 67P, with similar favorable conditions, would require 800 million such record setting rockets. Skipping the last insertion burn in favor of what I'll call "catastrophic lithobraking" will save you quite a bit, but you're still talking about a feat that would require thousands of times more rockets than humans have ever made for any reason combined. It would take years to reach the asteroid, and years to adjust its orbit.
With only 24 shopping days left until Christmas, so there's definitely not enough 2014 left for this theory to hold water.
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