Bodies like the earth are not made to move on curved orbits by a force called gravity; instead, they follow the nearest thing to a straight path in a curved space, which is called a geodesic. A geodesic is the shortest (or longest) path between two nearby points.

It has certainly been true in the past that what we call intelligence and scientific discovery have conveyed a survival advantage. It is not so clear that this…

The whole history of science has been the gradual realization that events do not happen in an arbitrary manner, but that they reflect a certain underlying orde…

Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experimen…

Omnia qua propter debent per inane quietum aeque ponderibus non aequis concita ferri.

The motion of the stars over our heads is as much an illusion as that of the cows, trees and churches that flash past the windows of our train.

Space isn't remote at all. It's only an hour's drive away if your car could go straight upwards.