The Earth and the Sky
Well, this is awkward!
My son sent this to me.
The Orion Constellation
The Distances to the Stars in Orion
Motion of the Stars in the Big Dipper.
(play at slow speed)
Modern Use of Constellations.
The best stargazing phone apps
Orion again
The Celestial Sphere
An actual celestial sphere
The Celestial Sphere Rotating Around the Earth.
The Motion of the Sky
The Motion of the Sky at Mid-Latitudes
The Motion of the Night Sky
(load MotionNightSky.swf)
The Yearly Path of the Sun on the Celestial Sphere - The Ecliptic
The yearly motion of the Sun on the celestial sphere; The Ecliptic.
The Sun's Path Through the Constellations
The Actual Motion of the Sun
(load SunPathZodiac.swf)
A Private Universe
Figure 2.15 The Seasons
(make sure to watch the narrated version of this on your etext)
The Seasons: another excellent Summary
(load ReasonForSeasons.swf)
