Past Time Is Finite, Future Time Is

Observation Always Involves Theory.

The Great Spirals, With Their Enormous Radial Velocities And Insensible Proper Motions, Apparently Lie Outside Our Solar System.

Science Is The One Human Activity That Is Totally Progressive.

Equipped With His Five Senses, Man Explores The Universe Around Him And Calls The Adventure Science.

Observations Always Involve Theory.