Quote:Astronomers have taken what is likely the first-ever direct image of a planet that is still undergoing its formation, embedded in its “womb” of gas and dust. The protoplanet, about the size of Jupiter, is in the disc surrounding a young star, HD 100546, located 335 light-years from Earth.
If this discovery is confirmed, astronomers say this it will greatly improve our understanding of how planets form and allow astronomers to test the current theories against an observable target.
http://www.universetoday.com/100366/firs...otoplanet/
With telescopes. What you're attempting to do is open a god of the gaps argument by pointing out whatever is not currently falsifiable (testable). This is a misunderstanding of what science does.
Certainly those theories supported by direct empirical experience and testability hold more weight, so to speak, but you're arguing that regardless of how good their extrapolation, the Greeks had no way of knowing the earth was round without observing it from space.