Heliocentric Websites
Celestial Dynamics
The astronomical calendar TimeSpace map, the Orbital Calendar Time-Space Map, shows the earth, moon and other solar system planets in position throughout the year with beautiful NASA image of Milky Way Galaxy. Version for STEM astronomy education and another with MAYAN DAY glyphs.
Not Applicable 
$ 8.95
ZET Astrology Software
Professional multifunctional astrology software, astrological charts sensitive and controlled by mouse, AstroCartoGraphy, sky planetarium, space explorer
1,525,712 $ 480.00
Ephemeris.eu - Astrology and Astronomy
Ephemeris generator, counts and draws sky maps for any epoch between -4700 to 7999 useful to astrologers and astronomers.
1,306,185 $ 480.00
Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets, Telescopes
Astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes, comets, constellations, eclipses, exoplanets, nebulae, meteors, quasars, observing, telescopes, NASA, Hubble, space missions, stargazing, and more
Not Applicable $ 8.95