There are 2 posts.
Pluto has special significance not only because it is the only planet in our solar system to have its status as a planet stripped and downgraded to a dwarf planet, but also because along with its largest satellite Charon, it is our solar system’s only binary planet system. In addition to Charon, Pluto has four […]more
Many cultures mark time by observing a full phase of the moon roughly equivalent to a month; in many languages the word month comes from the word moon. The Romans, however, took this one step further, naming the seven days of the week after the seven celestial bodies that are visible to the naked eye […]more