If there is no way to demonstrate that a statement is false, then the statement is not part of science.

 

It seems, sadly, that scientists seem to have forgotten this principle. For example, consider a black hole in general relativity (GR). According to GR, the geometry of space is modified by the presence of masses. Because of this, time is slower near a mass. Time on earth is very slightly slower than time on a satellite. This effect is critical for GPS systems. A black hole distorts space to the extreme, so that straight lines curve on themselves. If we watch an object falling straight down a black hole, we will note that it takes forever to reach the surface (called the event horizon), due to time slowing down near the huge mass.

 

SEE THE BOOK FOR MORE DETAILS.