What would you say if there was a friend of yours who stated the theory that the earth is flat? Shock? Shocked? Or immediately say that he's idiot and crazy? I myself feel natural, when I heard it.
Why? Because I have heard about this Flat Earther movement in the Flat Earth Society several years ago. My rented companion friend, then I was browsing and found that many scientists also follow this movement. What does it mean? Flat Earth is a conspiracy theory that is thoughtfully and intelligently enough!
When the year 2015 ago this movement re-emerged in America, a scientist Neil de Grease Tyson directly forward and explain (on a reality show). I happened to watch on Youtube, and he said that this understanding is not baseless.
If you are looking for images of earth on google, then all the earth images are rounded is CGI (computer generated imaginary). This is true, even all of NASA's rounded earth photos are also CGI.
But where did this CGI drawing be made? Apparently these CGI images are made from NASA satellite photography. So the CGI image is based on a set of images obtained by a NASA space satellite that is then merged into one.
Why do you need to combine multiple photos to be a single photo of the earth round? Because the earth is very large and the satellites are not far enough to take a picture of a full earth (round earth).
Let's say you want to take pictures of the house, but your position is only one meter in front of the house, can you take your full picture of your house? Of course not, now the problem, you can not back down, can only circle within a meter only, how to get the whole house? Of course by taking lots of photos and then combining them.
Many Satellites in SpaceThere are at least 1381 satellites in space. Not all these satelite photos are CGIs, you can find your own real satellite photos. But still if you do not believe it will be difficult affairs. In the video it is said that outer space is crowded with satelite. Let's look at it with a better perspective.
Satellites closest to the Earth's surface are referred to as LEO (Low Earth Orbit) circulating on Earth at an altitude of 160-2000 km. The number of LEO satellites is about 500 satellites. If you look at the surface area of the earth (round), then there are 500 satellites that operate in the area of 510,072,000 km2. If we distribute is 510,072,000 km2: 500 = + -1.000.000 km2. So there will be only 1 satellite every 1,000,000 km2.
In addition to the amount that is not too much when compared to the earth, it turns out the satellite size is also very small, too small to be observed on the telescope. The size of the ISS (International Space Station) is the size of the American Football field (0.0055km ^ 2) while the month is 9,476,927 km ^ 2, the ratio is 1: 1,723,077,636,3636. The satellite is 1 / 1.723.077.636,3636 times the size of this month moving at 28,000 km / h (we discussed in Final Part). It's small, it moves so fast again, it's these facts that make it very difficult to see satellites through a telescope.
So finding a satellite is not as easy as the video maker is saying. Even so, it still makes sense if we should be able to see satellites in the sky by telescopes. Therefore there are people who prove it, this is a video where one observes a satellite using a telescope:
www.youtube.com/watch?v=rIesWBTUeiI
Surely there will be a question like this "telescopes can display images of other planets, but the closest satellites can not be seen clearly?"
That's because the size of the satellite is very small when compared with the planet. Like venus for example, we can observe even with the naked eye. So naturally observed more clearly using a telescope, while the satellite size is very, very small when compared with the planet.
Read Also: The 28,000 km / h Satellite Speed makes perfect sense!
Conclusion
This video contains incomplete information. Because it only contains information that supports the idea that the earth is not round. As he was told that the round earth image is a CGI image from NASA, but it was never told how the image was made. (Most people would think NASA 100% compose photos of the earth).
Exposed information if no one ever saw the satelite from the telescope. But it is never told how small the satelite is when compared to the moon or the planets in our solar system. The fact that satelite is so small compared to the planet makes the possibility of satelite visible by telescopes very small, and this is a natural thing
Sumber:
wikipedia.org
Universetoday.com
Physicscentral.com
http://curious.astro.cornell.edu/about-us/41-our-solar-system/the-earth/orbit/87-how-do-you-measure-the-distance-between-earth-and-the-sun-intermediate
http://eaae-astronomy.org/WG3-SS/WorkShops/Triangulation.html
http://www.space.com/17683-earth-atmosphere.html
http://ds9.ssl.berkeley.edu/solarweek/THURSDAY/history.html
https://www.quantamagazine.org/20150113-a-proof-that-some-spaces-cant-be-cut/
wikipedia.org
Universetoday.com
Physicscentral.com
http://curious.astro.cornell.edu/about-us/41-our-solar-system/the-earth/orbit/87-how-do-you-measure-the-distance-between-earth-and-the-sun-intermediate
http://eaae-astronomy.org/WG3-SS/WorkShops/Triangulation.html
http://www.space.com/17683-earth-atmosphere.html
http://ds9.ssl.berkeley.edu/solarweek/THURSDAY/history.html
https://www.quantamagazine.org/20150113-a-proof-that-some-spaces-cant-be-cut/
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