sciences astronomy

GeoDirectory

Speed of light

Speed of light

From general relativity we know that only in local inertial frames does the measured speed of light equals the nominal speed of light (299792.458km/sec).

Wcs - the home of webcamscheinern

Wcs - the home of webcamscheinern

Wcs is a software for fast polaralignment of astronomical mounts. you nail your alignment within 20 minutes!

Astronomy in service of islam

Astronomy in service of islam

Moonsighting, islamic calendar, prayer times, and qibla direction

John wall

John wall inventor of crayford focuser.

Universe

Universe

Its description about the facts of expansion and creation of the universe

Science-and-technology

Arabic astrology

The unique website devoted to real and pure arabic magic and astrology to assisting and training people just like you in the craft of white magic. we also offer many services to the seekers of ...