Ancient writing indicates that Pythagoras postulated that the earth was round, and, about a hundred years later, Aristotle argued the same thing. Even before this, ancient peoples could see the round shadow of the earth on the moon during an eclipse. The thinking person could figure out why this would be so. It doesn't take a rocket scientist, and, though ancient peoples didn't have rockets or even aircraft to get a "bird's eye view" of things, they could observe and make conclusions quite well. Beyond these early ideations, both Pythagoras and Aristotle offered a "guestimate" of the earth's size, so it could be one of them. But it was Eratosthenes who got into it and make a nicely accurate calculation of the earth's circumference. It is possible that some other ancient investigators put forward some projections, but the written record, which suggests most clearly the who, what, when, where, and why of things olde, does not give us any other candidates. Use the links below to read some particulars and check things out.
because that was the first space craft to leave the solar system
The scientist who first studied living cell was A.V. Leeuwenhoek in 1674
The fist scientist to study plankton was Victor Hanson.
First you would select an attribute of the object you're going to measure. Next, select the appropriate unit of measurement. Finally, establish the number of units. There are also three useful components to help you make an accurate measurement. These are unit iteration, transitivity, and conservation.
It is a common knowledge that the world is round. I never read or heard anybody teach that the world is flat. A very very long time ago, the world once was thought to be flat. The horizon that we see now, people use to think that when you got to that point you would fall off the edge of the world. Not until boats and navigation came into fruition, the then thought "brave" explorers, set out to discover the edge of the world. It wasnt until they started sailing familiar waters that the theory of a round world came to be. Interesting huh?
Eratosthenes
because that was the first space craft to leave the solar system
The scientist that made highly accurate measurements that first disapproved the theories of Ptolmy and Copernicus was called Brahe.
george washington
The first scientist who proposed that the Earth was elliptical was Sir Isaac Newton in the 17th century. He developed the laws of motion and universal gravitation, which led to the understanding of Earth's shape.
The first thing on Earth with working ears. It doesn't take a scientist to hear sound.
Charles eniteisn
Because that is the first place they found it. It is not the only or the first place to actually have water, but Earth is where we found it first.
The first known measurements were presumably invented to allow for fair trade and accurate accounting
Copernicus.
What they thought was the circumference of the Earth.
we do not nooo but according to scientist they migrated from Asia