An improved astronomical calendar clock mechanism, integrating a sun-centered planetary dial with an earth-centered celestial ring with a fixed orientation number dial located in the earth's equatorial plane, with the sun on a meridian track fixed at 12 on the number dial, and the meridian track indicates the date on a calendar band which is applied to the outside edge of the celestial ring in a plane parallel to the celestial equator, and an hour hand emerging from the earth globe at the center of the celestial ring indicates the time relative to the fixed orientation number dial framing the earth.

The present invention relates generally to educational devices; particularly, an educational device primarily consisting of an illuminated globe with a wireless speaker and light display capabilities. The educational globe device according to the present invention provides an apparatus primarily developed for the purpose of teaching a child geography and astronomy while further providing entertainment.

A space flight simulator includes: a celestial-body-position output unit configured to output three-dimensional positions of extragalactic celestial bodies in space; an observation-position designation unit configured to allow an operator to designate a three-dimensional position and a posture of an observer in extragalactic space; a celestial-body-image arrangement unit configured to determine, based on the output from the celestial-body-position output unit, arrangement of an image of each extragalactic celestial body in a star field seen from the designated three-dimensional position and posture of the observer, and generate a star field image; a cosmic-expansion selection unit configured to allow the operator to perform selection as to whether a cosmic expansion effect is taken into account; a time designation unit configured to designate an observation time; and a cosmic-expansion correction unit configured to correct the three-dimensional position of each extragalactic celestial body based on the cosmic expansion effect and the designated observation time.

A space flight simulator includes: a celestial-body-position output unit configured to output three-dimensional positions of extragalactic celestial bodies in space; an observation-position designation unit configured to allow an operator to designate a three-dimensional position and a posture of an observer in extragalactic space; a celestial-body-image arrangement unit configured to determine, based on the output from the celestial-body-position output unit, arrangement of an image of each extragalactic celestial body in a star field seen from the designated three-dimensional position and posture of the observer, and generate a star field image; a cosmic-expansion selection unit configured to allow the operator to perform selection as to whether a cosmic expansion effect is taken into account; a time designation unit configured to designate an observation time; and a cosmic-expansion correction unit configured to correct the three-dimensional position of each extragalactic celestial body based on the cosmic expansion effect and the designated observation time.