Відео

This video proved nothing. A sun that rotates and changes position around the circle of the Earth can produce the same shadow results he described -which is what flat earthers believe.

How did they traverse the distance to know that they were measuring at the same time? Did they do a video call?

I am not a flat-earther but is there a place from where one can observe both shadows at the same time. Before planes, satellites or instant communication, how would they be able to measure the length of the shadows in two different spots at the same time?

These conspiracy theories about ancient technology… now Carl Sagan is saying the ancient Greeks could be in two places at once!?!?

In order to deduce the Earth was spherical, Aristarchus first had to deduce that the Sun was very far away and its light rays were in effect parallel. That was even more amazing than concluding the Earth was curved.

Other Dimension is something almost impossible to enter but can be done sounds crazy but it exist...one view about not human made not a sun(light), we can say it other dimension...not a sun something bigger... just maybe...if you saw it exist but if you not see it become just story.... just maybe....we can say exist other creatures is real.... knowledge of the sky..human hard to understand.. because why human brain have limits... just maybe

Great stuff i wonder if this fundemental stuff is being explained at schools ? It used to be but i suspect its more about stupid pronouns pretending to be a cat and being force fed izlamic indoctrination ? While only critising Democracy but not Marxist Leninist Comunism ?

I used to be flat earther and I walked to the edge, I soon came around.

The greeks were nasa

This explanation, (dubbed in spanish) is one of the most vivid memories of my childhood. It made so much sense, I've lived my life not taking anything at face value and looking for the possibility naked to our eyes. Thanks MR. Sagan, your spirit carries on.

Earths been cooling for 15 years now.

I remember seeing this episode when it first played. I looked forward to watch this show each week.

The Egyptians had worked that out way before the Greek invaded.

You know I've heard the name Carl Sagan a lot and I don't know if I've actually seen him in anything else and not realized it was him but I'm glad this showed up in my shorts feed so I could see him and hear what he had to say. It's baffling to me that there are so many people in the world who actually believe that the world is flat. I mean it's so obvious that it's round

So how did the Greeks in one city know that the shadow of the obelisk in the other city was a different length?

What alot of ancient greeks did was, ask questions. And they did get alot of answers. A ton to learn from our past. Everything really because the better we understand our past the better we can prepare for the future.

Such a simple explanation.

Go 800km further south and you will find shadow in other direction and then u can conclude earth is a wave

This actually a terrible example

11:11 And you wonder why nearly nothing has been done yet.

Coming back a year later, scientists are now saying we've blown past 1.5c above industrial average. Now, we are headed to 3c by end of century. This means the AMOC will likely collapse by 2095.

Maybe it's just me, but that logic seems a bit flawed. Even if the Earth were flat, there's still a chance that a shadow would/could be cast. The Earth moves around the sun. It does not remain stationary. Depending on how the Earth was laying and the direction in which it was revolving around the sun.... there should still be a shadow somewhere. The only way there shouldn't be is if the Earth's surface was directly facing the sun and the Earth remained stationary.

what about lando, lol?

Wasn't Star Wars a Fictional movie?

Whatever. Sagan was a CIA operative and a misleader of the public.

The Earth is flat

Jesus, if it takes Carl to explain this.....Would any flat earther listen?????? No???

How would they know what shadows were like at two different points of the earth at any given time? Did they call each other up and say, "It's noon. What does the shadow look like?"

Carl was such a pompous establishment tool. Can't understand why people outside of npcs liked him.

When was this 1977?

Surely.... assuming the sun is a point light source, the only way the shadows would be the same is with a concave earth?

Brilliant. Wonderful man with incredible insight.

Gawd I hate people like him. His pretentious gobbledegook bull crap.

Every time I come across this, it always helps make me feel better

Social media of today explained by someone from the past

Remember when the guy in Alexandria got the call that the other guy's obelisk had no shadow?

And 39 years later.......

All flatearthers admit that the earth is round, they all do believe in a circular disc, not a rectangular one.

I can't believe he got that so wrong. Yes, you can prove the Earth is round that way - but you need three sticks! With two, you can measure the diameter of the Earth, but only if you start with the assumption that it's round. Two sticks won't prove the Earth is round. A flat Earth can have no shadow at one stick and a long shadow at the other, it just means the sun is directly above the stick with no shadow. Then using the length of the shadow cast by the other stick and the distance between sticks, you could triangulate the height of the sun above the flat Earth. BUT - if you add a third stick, you find that you get three different locations for the sun, depending on whether you triangulate using the first and second, first and third, or second and third sticks. Add more sticks, and the problem just gets worse. The hypothesis that the Earth is flat is incompatible with the results. Try your experimental results with the hypothesis that the Earth has constant curvature and the sun is very distant relative to the size of the Earth, and suddenly all the results work neatly. *That's* how the ancients figured out the Earth is a sphere, and it's what enables us to navigate with sextants - one degree of change in the height of the sun, or the north star, equates to 60 nautical miles travelled north or south, regardless of where you are. Can't make that work with a flat Earth.

When I was a kid I could not wait to get home from school. Becouse they were showing the complete series of cosmos on PBS back when I was 8 years old. 1976. I now have it on DVD. I still injoy watching it. Carl's version is leaps and bounds better then Neal's...

Let me explain. Actually, it is because the sun is 50 km above our heads. Ancient greeks so dumb to believe earth was a sphere.

I don’t get how they could know what was going on at such distance at the same instant. Where they relaying information through a network of people shouting to the next?

But…….

“BullSh*t Carl!” - Flat Earthers

I find it hard to believe this fella now.

They must have had telephones or teleport abilities back then to compare shadows -.-

Clouds

They had clocks?

If you wonder why i appreciate intelligence... perfect example right here.

They definitely apparated to confirm. 🤷