And check out Nemesis on that site.
The link in my post above deals with all these topics
Vulcan, the intra-Mercurial planet
Mercury's Moon
Neith, the Moon of Venus
The Earth's Second Moon
The Moons of Mars
The 14th Moon of Jupiter
Saturn's Ninth and Tenth Moons
Six Moons of Uranus
Planet X
Nemesis, the Sun's companion star
The story behind Nemesis is interesting. If there is a Nemesis, it would have to be a brown dwarf.
I wonder how far away another star could orbit from the Sun? – a light year?
