Sometimes attaining the deepest familiarity with a question is our best substitute for actually having the answer.

No matter how hard you try to teach your cat general relativity, you're going to fail.

The pinpoints of starlight we see with the naked eye are photons that have been streaming toward us for a few years or a few thousand.

String theory has the potential to show that all of the wondrous happenings in the universe - from the frantic dance of subatomic quarks to the stately waltz of orbiting binary stars; from the primordial fireball of the big bang to the majestic swirl of heavenly galaxies - are reflections of one, grand physical principle, one master equation.

I enjoy reading blogs, but am not interested in having my spurious thoughts out there.

When you drive your car, E = mc2 is at work. As the engine burns gasoline to produce energy in the form of motion, it does so by converting some of the gasoline's mass into energy, in accord with Einstein's formula.

Physicists have come to realize that mathematics, when used with sufficient care, is a proven pathway to truth.