oriel36 wrote:
On Wednesday, July 29, 2015 at 9:45:44 PM UTC+1, oriel36 wrote:
As the Earth moves through space it turns as a function of the Earth's
orbital motion so that the North pole is roughly 14 degrees past the
center of the full sunlit face of the Earth when the picture was taken on July 6th -

http://www.nasa.gov/image-feature/af...ion-miles-away


So many visitors to this forum still adhere to the Earth tilting towards
and away from the Sun even when this impressive imaging is available to
demonstrate that the Earth has dual surface rotations to the central Sun.

It is,of course, for astronomers to enjoy.

A wonderful way to show kids the surface rotation of the Earth as a
component of its orbital motion is through a clock registering the polar
day/night cycle as our planet turns slowly and unevenly to the central
Sun over an circuit of the Sun.

Presently it is, in orbital terms, roughly 1:30 PM across the Northern
hemisphere while it is 1:30 AM in the Southern hemisphere using the North
and South poles as convenient references for this orbital day or 'polar
day/night' as most people now know it.

In under 2 months the polar points will be positioned at opposite ends of
that sunlit face and I challenge NASA to produce photos and time lapse
footage showing exactly what is happening as the Earth moves through space.

You can see that in the second half of this simulation.