Planet Shape
Be yourself; Everyone else is already taken.
— Oscar Wilde.
Try to figure out how is our world now. The idea is simple and most people could imagine his home like a sphere inside the Milky way galaxy, but this concept evolve from long time ago.
Ancient philosophers described our world as a planar ground carried by titans below the skies.

But even now some people still assure that the planet Earth is not rounded, not a sphere, and simple deny the knowledge from astronomy and science calculus. How can you proof the Earth shape?
A comfortable way to confront the deniers is letting them to explain their theory of how is our planet, and ask for proofs and how can explain phenomenons like:
a) Sea ships on the horizon: ships do not just appear out of the horizon (like if the world was flat), in fact looks like emerge from beneath the sea.
b) Lunar eclipse: it is said Aristotle was the first to notice the spherical Earth shape in the shadows during a lunar eclipse.
c) Star Constellations positions depends on place of sight: again Aristotle pointed out some stars were only visible from Egypt and were not found in other northern regions.
d) Shadows from different locations: shadows from long distance locations create different length shadows. Eratosthenes calculated the circumference of the Earth following this principle.
e) Higher you are, further you see.
f) In a plane, you can do a complete round-trip, and also is possible to check the curvature of the horizon if flying very high.
g) Earth time zones.
h) Other planets configuration, none flat.
i) Gravity and mass center.
j) Pictures from outer space.

This is the first post on my new site. I’m just getting this new site going, so stay tuned for more. Subscribe below to get notified when I post new updates.
Please comment here your point, explanation (not in the above list) about why the Earth is rounded/flat or your own believed shape.