zodiac A band passing around the celestial sphere
, centred on the ecliptic, extending about 9[degrees] on either side.
As for those who say that [the earth is at rest and motionless] because of the attraction (jadhb) of the celestial sphere
from all directions equally, their claim and opinion are flawed in several respects.
The emergence of the astrolabe as a single instrument began with the bringing together of two forerunners in Greece in the second century BC: the dioptra--an instrument for sighting the altitudes of celestial bodies--and planispheric projections which could be used to represent the celestial sphere
on a flat surface.
If we detect the two different positions (call them Ml and M2) of M on the celestial sphere
when seen from I and S, we can measure the angle IMS = p, that is called the parallax angle or simply parallax.
Uttarayana is the time when the Sun travels towards north on the celestial sphere
This unusual and detailed encyclopedia reviews the widely known constellations and locates stars relative to Earth and the celestial sphere
These results correspond to the assumption that the histogram shapes are determined by a picture of the celestial sphere
, and also by interposition of the Earth, the Sun and the Moon.
Invalid is the claim (batala al-qawl) for the existence of an effective agent (mu'aththir) other than God, whether called planet (kawkab), celestial sphere
(falak), intelligence (aql), soul (nafs), lofty spirit (ruh ulwiyy), or lowly spirit (ruh sufliyy).
All the features of fixed planetarium projectors are here: annual motion; projection of the entire celestial sphere
, including the Milky Way; exact latitude, longitude, and date setting; celestial reference lines and grids; and more.
To be fair, Sabra does mention Ibn Sahl in two places in the commentary, but in a slightly different context, namely, a discussion regarding the transparency of the celestial sphere
Twenty years of research and development in CCD technology will allow for a survey that will map one quarter of the celestial sphere
with all resulting data being usable again and again by amateur and professional astronomers," Rahimian added.
A glowing, celestial sphere
exploded into light and Professor Hawking told an audience of to "look to the stars" in an opening xploded Stephen millions pening TURN TO PAGE 2