Celestial Shadows

Volume 410 of the series Astrophysics and Space Science Library pp 185-240


Multiplying Moons

  • John WestfallAffiliated withAssociation of Lunar and Planetary Observers
  • , William SheehanAffiliated with

* Final gross prices may vary according to local VAT.

Get Access


From time immemorial through January 6, 1610, there was only one moon known in all the heavens. That moon was our own moon, which even after the Copernican revolution had dethroned the Earth from the center of the orbits of the Sun and other planets, still continued faithfully to circle the Earth). One week later there were five moons—four others had been added.