Most people don’t know very much. (Now tell me, if I had guessed that your reaction to that opening would be an initial nodding agreement quickly fading to the realization that it might include you, too, would I have been right?)
This semester I started tutoring in the physics and math study center. I am the only “pure” physics tutor – the rest of the tutors are mathematicians or engineers who feel very comfortable with mathematics (justly so, they’re all quite awesome). Most of them shy away from physics problems, though, letting me – and a handful of other tutors – deal with the dreaded subject.
Today, my favorite source of friendly astronomy-news commentary, Phil Plait (BadAstronomy.com) published a post regarding a new picture taken by Soichi Noguchi, an astronaut on board the International Space Station, clearly showing the pyramids of Egypt from space. That means, of course, that the Great Wall of China is not the only man-made object that can be seen from space.
I usually don’t like making grandiose statements ahead of myself, like “Astrology is totally unscientific”, because I prefer leaving the benefit of the doubt until I check the claim. In the case of Astrology, however, there’s no use pretending.
A few months ago I released an experiment video explaining how Eratosthenes calculated the circumference of the Earth using the shadow of sticks. The method was performed almost two millenia ago, and produced quite accurate results (considering the ‘equipment’ used). But it was far from being the only (or first) method to understand our planet’s shape.