How Far Is Earth From the Sun?
ฝัง
- เผยแพร่เมื่อ 27 ต.ค. 2013
- It's amazing to think that for the majority of human history, we had almost no understanding about the Sun.
We didn't know what it was made of, how it formed, or how it produced energy.
We didn't know how big it was, and we didn't know how far away it was.
We orbit the Sun at a distance of about 150 million kilometers. This number is actually an average, since we follow an elliptical path.
At its closest point, the Earth gets to 147 million km, and at its most distant point, it's 152 million km.
Distances in the Solar System are so vast that astronomers use this distance as a standard for measurement, and so the average distance from the Earth to the Sun is called an astronomical unit.
Instead of saying that Pluto is 5.87 billion kilometers away from the Sun, astronomers say that it's 39 astronomical units, or AUs.
You might be surprised to know that the distance from the Sun to the Earth was only determined within the last few hundred years.
There were just too many variables.
If astronomers knew how big it was, they could figure out how far away it was, or vice versa, but both of these numbers were mysteries.
Ancient astronomers, especially the Greeks, tried estimating the distance to the Sun in several different ways:
measuring the length of shadows on Earth,
comparing the size of the Moon and its orbit to the Sun.
Unfortunately, their estimates were off at least by a factor of 10.
The key to figuring out the distance to the Sun came from observing Venus as it passed directly in front of the Sun.
This rare event, known as a Transit of Venus, happens only twice every 108 years.
Once devised, the best opportunities for taking this precise measurement came during the Venus transits of 1761 and 1769.
Astronomers were dispatched to remote corners of the globe to observe the precise moment when Venus began to move in front of the Sun, and when it had moved completely across the surface.
By comparing these measurements, astronomers could use geometry to calculate exactly how far away the Sun is.
Their initial calculations put the distance at 24,000 times the radius of the Earth. Not bad considering our modern measurement of 23,455 times the radius of the Earth.
Modern astronomers can use radar and laser pulses to calculate the distance to objects in the Solar System.
For example, they fire an intense beam of radio waves at a distant object, like Mercury, and then calculate how long it takes for the waves to bounce off the planet and return to Earth.
Since the speed of light is well known, the return travel time tells you how far away the planet is.
Astronomy has truly helped us find our place in the Universe.
It nice to be living in a time when many of these big mysteries have been solved. I don't know about you, but I can wait to see what's around the corner of the next discovery. - วิทยาศาสตร์และเทคโนโลยี
Mind boggling to just think of how vast space might be. Truly mind boggling, to me anyway
That's insane that they figured out how to measure that way back then.. I still don't understand it..
It’s just geometry. You could probably do the math if you remember your high school SOHCAHTOA
it's about walking distance
😂
💀😂😂😂
Its so big that even though its 147 million km away we can still see it clearly. Thats crazy af and the stars are even farther away and we still see them
It's more than a million kilometers across. It's hard to wrap your mind around how big the Sun is.
@@frasercain And it's not even on the larger scale of stars out there in the galaxy. Let alone the universe.
You're right, it is crazy that they expect us to believe all these made up numbers.
Yes..the fact there are stars out there that make our sun look like a grain of sand is extraordinary and terrifying..the mind cannot even comprehend how big those stars are..stupid question..lol can we see any of those stars with a telescope at all?
Yes, LIES are very hard to Comprehend
It's just the way, the Brain works !!
(Now that is FACT )
ha haa ha
You should do a video on all the planets/moons we have landed on like Venus, Titan, etc.
We never landed on anything in "space", it doesn't exist. Stars are just lights in the sky.
I can't believe this shit.....92 millions, yeah right.
93,000,000. million miles away!
😂 that sounds so silly
how do you know how big is Venus and what is the distance from Venus to the Sun
Great video, thank you man. I also build a APK to simulate this process: th-cam.com/video/uQ9TZfZbtTs/w-d-xo.html
Can't you look it up? You could if you aren't a flat earther, but if you are, then what's the point?
@@Justwantahover it was a rethorical question
I'm confused about using radar to bounce signals between celestial bodies. do they lead the pulse fired at a planet (like firing a gun at a moving target)? and if they hit what they want, how would earth then be in a position to catch returning pulse? is everything not moving through space at very high speeds?
I call bs on all of this stuff. I once believed, but not anymore. Just bs.
Amateur radio enthusiasts have bounced radio waves off both the moon and the sun. They took over 16 mins to make the trip to the sun and back.
I was really excited to find out how they calculated the distance from the Earth to the Sun. He said everything short of unlocking the key to the answer. I still don't understand how you get the distance and size variable????
It's geometry. Astronomers observed the transit of Venus across the Sun from two different locations on Earth. This allowed them to make a triangle and measure the angles of the triangle. Since they knew the distance between the spots on Earth, they were able to calculate the distance to the Sun.
What loss me was if trying to figure out how far the earth was,how did they know how far Venus was considering that they still haven't figured out how far we were,I know it's geometry but there is something wrong or funny here. In their guestamations in Venus and it's orbit doesn't the earth wobble and move away in it's orbit? And wouldn't that throw off even their measurements of Venus? Just wanting to know
Question about light years - If light travels for a year, bounces off a planet and comes back in a year...then the forward distance is called as one light year. Then how do astronomers calculate the distance of galaxies in the tune of 100+ light years? No one would have beamed a light ray at a planet 100 yrs ago and waited for it to bounce back...
Here you go, we did a video that explains it: th-cam.com/video/moiSQ-Gc5pg/w-d-xo.html
It's all gobblygook
This didn't tell me the answer but I found it helpful
It is a common knowledge that the distance between earth and sun is about 150 Million kilometers and the light needs about eight minutes to cover this Stretch.
Can you talk about how many milisieverts per hours astronaut are exposed to?
And how a little south can block gama rays (electromagnetic waves) not alpha (particulate) radiation.
Alpha can be stop by sheet of aluminum. Beta by thin layers of materials, but what about gama rays expositions for horbital station exposed all year long?
Do you have an idea how many shielding value of a material like led or dupleted uranium you will need to make life possible for the astronaut?
gama rays cannot be affected by electromagnetic field, don't come up with some thing about earth magnetic field deflecting them. Gama ray travel straight line
I have 20 points that we can all see (outside) that proves globe. Do you want it?
I am curious to know if this distance fluctuate every 108 years. Are we getting closer to the sun an what impact doest this have to global warming 🤔
My boss calls me an Astronomical Unit sometimes.
I honestly didn’t realize how far and large the sun is
does it look that far away? strange how it has the ability to shine a very specific area on earth being so far away.....
I also wonder....the rays not hitting earth directly, should also give some light on the side away from the sun....? But instead it is totally dark
Y’all are fucking dumb 😂
@@gronz If there is nothing close to the earth (except the moon) what would the light reflect off to light up the dark side? The moon does, and that's why there are moonlit nights and the moonlight on the ground is EXACTLY what you are talking about (lighter on the dark side of earth when the moon is up). The trouble with flat earthers is that they are willfully ignorant and won't look up stuff and then troll space video and ask the dumbest of the dumbest questions.
Fraser Cain >> Correct me if I'm wrong but I think that to use the transit of Venus to find the distance to the sun you'd have to know the distance to Venus. How did they work that out?
It's trigonometry. If you have two observers on different parts of Earth make their measurement at the same time, they can measure a slightly different angle to Venus and the Sun. That tells you the distance to Venus since you know the actual distance on Earth.
Fraser Cain that would only work on a flat plane!
Far away stars usually emit cool white light but our sun emits warm light and not cool white. so is our sun really a star??
Great video, thanks :)
It's definitely possible to create materials that resist the intensity of sunlight while allowing the sun to be visible. This is for all those people who are dumb enough to say, "oh geez, how could they look at the sun?"
That's what eclipse glasses are for.
Well the Indian scripture of Hanuman Chalisa written 1000s of year ago mentionS the distance correctly. Check it out. “Yug Sahastra yojhan par Bhanu”. 96 million miles.😊
Geez I hate km lol I’m so used to miles
I learned how far away the sun was, how fast light was, and how long it took on average to reach us from the sun when I was at school.
My favourite book to copy when I was in detention was, The story of light.
George Leask why did you get into detention that often anyways?
I wasn't a perfect pupil when I was at secondary school
Img
There's nothing in this video that tells us how we can know that the sun is really the distance he states it to be, so what good is it?
I gotta say, the Greeks being off by only an order of magnitude would have been better than I expected.
Apparently though, according to this table en.wikipedia.org/wiki/Astronomical_unit#History there were some estimates that were even closer while others, even later ones, were waaaaay off. So I guess it's a matter of having enough people guessing and someone is bound to get the numbers approximately right.
I had just tutored a 15 year old on trigonometry today, and my first triangle was the Earth, a half Moon, and the Sun, and told the story of how Aristotle came up with an estimate for the distance from the Earth to the Sun.
I come back home tonight, and this video is the first in my recommended. Creepy much? Google, what are you doing to me?
exactly Earth How many kilometre far from the sun ?
Come on, yall! You don't really believe that do you?! 😂
Yes.
Universal Studios Present amk
How did you measure it?
They didn't, the size of Venus was presupposed as well as it's angle to Sun and Earth, and they just went from there. No one actually knows any of the heavenly bodies' distances from Earth.
@@rap1df1r3 So are you saying the world is flat? Or are you saying they can send stuff to planets but "don't know" how far away the planets are?
I don't know but they did send stuff to the planets so they must have measured it.
@@Justwantahover The Earth is definitely flat and motionless, but the point I was making is that they just guessed the distance to the Sun and extrapolated the rest from there.
Is the earth traveling at the speed of light in its orbit around the sun, if it takes 365 days for the earth to complete one orbit around the sun, at a distance of 150 million km, the circumference of the circle created by the earth's orbit would probably be around 600 million km, which would be equal to the distance travled around the sun, now if it takes the earth 365 days to travel 600 million km, then at what speed is the earth traveling to cover the average distance of 600 million km in 365 days ??
The Earth is traveling about 30 km/s.
I can't believe the heat from the sun traveled 150 million kilometers just to melt my chocolate bar
Pretty rude thing for the Sun to do.
Well, you shouldn't because it's nonsense.
hey kids in Britain and America he means 93million miles away.
Wowsers
so where do we can read about the math of the distance from earth to sun ??
It's amazing, How it goes AGAINST, EVERYONE'S "thinking"
And Don't forget, the SUN is 152,000,000 (MILLION) km away
And the Moon 384,000 km away
And We are Spinning !!
And the Clouds Spin with Us -
Ohh did i just write that ?
HA HAAAA
They had a better idea on how far the sun is in 1769 than the flat earthers do in 2020. lol
It's simple take the absurd, unproven 93 million and subtract 92,999,935 and there is your answer!
How do you "know"? Can you answer that? Can you even try?
@@Justwantahover du.mbass- look up. How can a smaller by far moon block the Su n if you believe what your ibstructrd. I've seen clouds behind the Sun. I measure the Suns path and also much variance on its size. All impossible from 93 million miles. Bless your brainwashed heart.
@@Justwantahover still have your head up psuedosciences butt? Seriously space doesn't exist and we live under an impenetrable firmament. Man up and do your own investigation- ostrich.
@@mikek39 nasa doesn't like the firmament idea. Commence operation fish bowl!
How come we can still see stars behind where the sun was after it sets? If the world was flat the sun "vanishes by flerthspective" closer than the background stars. wtf Can any flat earther answer that?
in perspective how really looks the distance from the earth and the sun like if you are waching both in the distance. in the vídeo of Blue dot of Carl Sagan they show the earth very far away but why the sun not can see?
But space is dark?
Why can't we just send radio waves straight to the sun? Why do other planets have to be involved?
To range an object with radio waves you have to detect the waves after they bounce off the object. The time it took for them to make the round trip is what you use to calculate the distance. The sun is an active source of radio waves, so even if you could bounce a signal off the sun, there is no way to distinguish your radio waves from those being naturally emitted by the sun.
We can send radio waves straight to the Sun. But we can only do it at night.
@QURANa VIRUS joke -- you -- zoom
We still don't know ...we just believe what we are told ...
VESANG Yes we do you can do the mesurements yourself if you dont trust any scientist
shadowmax889 I agree ...but my measurements don't agree with those science drops for us in the box of ignorance ... can science be wrong or even worse ...lie to us ?....
what are your mesurments? what is the acuarcy of your instruments? can you be wrong? and all the scientist that mesure the distance from earth to the sun with accuarcy since the reinacence are wrong and just liying to us when other scientific frauds have being uncovered?
shadowmax889 In this specific case / the distance to the sun / ...have you been paying attention at the angle of the sun rays /when you have holes in the clouds / ?
Two days days ago I was driving the car with my family and showed them the rays ...as much as almost 45 degree on the outer edge pointing to much closer and smaller sun. The sun rays should be straight down and even reverse to what I see since the sun is much bigger than the earth .
I have a project for this summer to measure the distance to the sun using simple trigonometry / 2 points on earth , sun and 2 angles / ... people have done it already and calculated about 3100 miles distance. Using sextant tool they came to about the same ... so I decided to check that for myself ...I know one thing, the angle of the sun rays do not comply with current science results ...FOR SURE !
what was odd about the angle of the sun in holes of the clauds?. That doesn't mean anything. If you are going to use sextants you will have errors because they are very inaccurate. Use telescopes during a total solar eclipse to point out the real position of the Sun.
A good country mile, should only take about a new York minute.
The math checks out.
you scare me without a beard... well not scare , but I am so used to your beard that when I saw you without it kinda freaked me out hahaha
show it in a graphic and good is
Hah thanks, that sounds just like something I'd say.
The sun 🌞and the moon 🌙 , both are the same distance from 🌎 earth ..come to florida and you will see the moon the west and the sun on the east sunrise..
The sun is not that far away its just up with the clouds not that far away if the sun was 147 million miles away It wouldn't shine light on the earth
Just because you say it we're just suppose to believe it right?....
No, these are the kinds of things you can test for yourself. During a Venus transit, for example, you can make measurements and then compare them to measurements made by other people on Earth to make the calculation. You can send laser pulses to the Moon and calculate how long they take to return to figure out how far the Moon is. Many of the astronomical calculations are still possible to be done by amateurs. So go out and prove it for yourself.
It's not because he says it. This information is literally everywhere and proven from many different.. angles.. and sources. If you want to believe that ALL OF THEM are wrong and conspiring against you because you're just that special, then go ahead, but for most people, the evidence is clearly overwhelming. Do some research and piece it together yourself. It's not possible for many different people to all be hiding a big secret from you. The mathematics makes sense to yourself too when you actually learn about it and understand it. Your comment comes from a place of ignorance.
Most people nowadays, with the huge convenience of the internet, are just accessing the knowledge and ignore the facts behind it which is the most important and fascinating thing! Also it makes misinformation a very huge possibility.
That is why I like your videos, you answer scientifically, how far and why is the correct answer!
@2:30 they were according to your numbers 97% correct which is an A
Pretty impressive.
This is awesome. I love learning about space.
TROLLS, trolls as far as the eye can see!
Yes at least 5 astronomical units they are
🕵️🤔
I can make machine to go inside the sun.
Why do you say how the sun was made God created the sun
Can you provide a citation for that?
93m miles give or take unless you're a flat earther when it's just behind the clouds apparently 🤣🤣🤣🤣🤣🤣🤣
can it bounch back to earth
Damn that’s gotta be real bright looking at Venus pass in front of the sun with a telescope
The Sun is about 150 million km (93 million miles ) away from the Earth.
Exactly.
BEM FIXE......
Wrong 😑 Measurements Sir
Yo
this guy literally memorized the Wikipedia page on how far the sun is word for word and just recited it here
According to hunuman chalisa.... Distance between earth and sun as 22000 times of earth radius the earth's radius is some of 6371 kms....
If we calculate the distance 6371×22000 we get some of 140162000 wich is very close
You cant see that far You would not be able to see the sun 93 mil miles away 😂😂😂
Phaneron I lost brain cells because of you
Raire Fine by me
Yes you would - and do.
Willoughby Krenzteinburg We do cause our sun is not 93 mil miles away Just go outside and look at it Its just there You can feel its presence I mean cmon
@@vulvapitR333 yeah, it's just there....93 million miles away. You go ahead and think whatever you want. The universe doesnt conform to your ignorance. I'll go ahead and understand how basic geometry works.
The Red line to the right shows the distance of each planet from the Sun in millions of Kilometres.Mercury is closest&Neptune is furthest away.Earth is about 150 million kilometres from the Sun.
B9o!
This distance was told by Tulsi dash in 16th century
Jay shree ram
WILL YOU PEOPLE STOP USING THE METRIC SYSTEM. . . . USE MILES
I never learned miles.
1:44 A see through SGI Venus 😂😂😂
Know one even knows how big stars are
you don't even know how to speak
You didn't say it, so I guess I'll have to.
"Hi. I'm Fraser Cain, the publisher of Universe Today."
NIce try.
I don't think the sun is that far from earth also I don't think the earth spins
***** I appreciate your input ! I researched a lot on the topic of " great deceptions " we have been into ... there is no diffraction or refraction in this case ... straight rays point straight to the light source / the sun /...
we have been lied to BIG TIME ... NASA is a JOKE . There is not as single real picture of the earth ... they are all composites / which means FAKE/ and CGI /from their own mouth/ . I don't know if you know but there are a lot of scientists believing in geocentric universe / this is to tell you something / , the latest study of radiation background shows the earth as center of the universe / they call it access of evil / ... even the famous atheist Krauss Lawrence does not know what to do with it . Thank you once again and all the best wishes from me to you !
VESANG Heard of solar parallax? NASA did not exist in 1761, 1769, 1874 or 1882. The maths were double and double checked.
+Fraser Cain He´s a troll.
Mark White u probably believe the earth is flat aswell
I don’t believe you passed the 6th grade.
Repeated?
the sun is hot !! (nod nod, wink wink)
SHUT UP ABOUT THE SUN!1!1!1!1!
Also the sun is as big as the moon..
The sun is million of miles away right, da fgck is a cloud doing behind it huh Government
An you leave earth because o f the dome -_-
Bullshit. Yogis from many parts of the world knew the distance more than 3000 years ago.
🙆😯👉Allah 🚀🛰️🤳
nobody
teachers playing this in the class: SHUT UPP
35000
Thanks for the update on the new update thanks for the update thanks for your help thanks for the update thanks for the payment thanks for the update thanks for the payment thanks for the update thanks for the payment thanks for the update thanks for the payment thanks
Indians knew it way ahead.. haha.. for a person of your knowledge and experience, before you give conclusive statements about any thing.. i think you should always check your facts.. Indian astronomers knew this even long before; An example, a written proof can be found in a 15th Century poem...which implies it was not just the astronomers but any educated person in India knew this; scientifichistory.blogspot.in/2013/04/distance-of-sun-from-earth-calulated.html
Needs.... more... ellip..... ses.... Al.... so.... mis... sing... ran... dom.... cap... it... al..... let..... ter...... s
92 million miles away
M.
😂🤣😂🤣😂🤣😂🤣😂🤣😂🤣😂too many variables you mean to many lies...
You mean ancient Egyptians!
Complete false science
Oh, please enlighten us. How far is the Earth from the Sun? When you do your calculations from the Venus transits, what number do you get?
He gets zero. Exactly like his highschool grades.
im dumber now!
Uh oh! That's exactly the opposite outcome of what I wanted.
Flat earthers will have to amend their theory to incorporate the fact that the planet Venus is also still within the vicinity of our atmosphere, orbiting below the firmament lol.
This thing suck
No!!!!!!!!!!!!!!!!!!!!!!!!! !!!!
Boo!!! I did not learn nothing
Oh no! I tried.