On Jun 28, 7:56***pm, Pentcho Valev <pva...***yahoo.com> wrote:
> http://www.perimeterinstitute.ca/Out...niverse/Why_Do...
> Perimeter Institute: "One may imagine the photon losing energy as it
> climbs against the Earth’s gravitational field much like a rock thrown
> upward loses kinetic energy as it slows down, the main difference
> being that the photon does not slow down; it always moves at the speed
> of light."

xxein: Gravity is a discoverable, discernible and measurable effect,
It bends light for crying out loud.

THINK. What happens to light as it goes directly to or away from a
gravitational object?

Geez, our science is dumb.