41. Also Divini had noticed in 1657 the satellite of Saturn, which previously he had considered a simple fixed star . 42. The ancient astronomy taught that above the seven planetary spheres was an eighth, the sphere of the fixed stars . 43. He also maintained that one can use a frame of reference in which the fixed stars are at rest. 44. As a practical matter, inertial frames often are taken as frames moving uniformly with respect to the fixed stars . 45. It can show nearly 50 fixed stars , and animate the chart in real time synchronized with the OS clock. 46. But it has long been known that the Sun moves eastward relative to the fixed stars along the ecliptic. 47. In the Mercury to Saturn, and thence to the sphere of the fixed stars and the heavens of the angels. 48. The star catalogue compiled by Claudius Ptolemy in the 2nd century CE lists 1, 022 fixed stars visible from Alexandria. 49. The concept of inertial frames of reference is no longer tied to either the fixed stars or to absolute space. 50. If there is one fixed star in his political constellation, it is that income tax rates must never, ever be reduced.
