Abby Cessna
Orbits of the Planets
[/caption] Centuries ago, people believed that the Earth was the center of the Solar System. Slowly, that view was replaced…
What are the Sizes of the Planets?
It is often difficult to grasp just how large the planets actually are. There are a number of ways to…
Weight on Other Planets
[/caption] Many children, and even adults, dream of visiting other planets and wonder what it would be like to stand…
Plane of the Ecliptic
[/caption] Plane of the ecliptic, also known as the ecliptic plane, is a phrase you will often hear in astronomy.…
Minor Planets
[/caption] Minor planet is a term used to refer to a celestial object - that is not a planet or…
Habitable Planet
[/caption] The term "habitable planet" seems rather broad. Does it mean that it is habitable for humans? Is it merely…
Discovery of the Planets
[/caption] We actually only know the exact date of when a few of the planets were discovered. Five of the…
Names of the Planets
[/caption] You may recognize the names of the planets from your high school literature course or a history class. That…
Planetary Alignment
[/caption] Thousands of years ago, men looked to the planets to guide them. Planetary alignments foretold momentous events of good…
What is Interplanetary Space?
[/caption] The region of space within our Solar System is called interplanetary space, also known as interplanetary medium. Most people are…