Orbital Radius vs. Planetary Radius

Earth is the third most distant planet from the sun.
••• Comstock Images/Stockbyte/Getty Images

Our solar system is home to eight planets, but thus far only Earth is thought to harbor life. There are a number of parameters that define a planet and its relationship towards the sun. These parameters affect a planet's potential to support life. Examples of these parameters include the planetary radius and the orbital radius around the sun.

Orbital Radius and Planetary Radius

A planet's orbital radius is its average distance from the sun. This is one of the most important parameters in determining the potential for life to exist on a planet, since it plays a major part in determining planetary temperature. The planetary radius is the distance between a planet's center and its surface. Therefore, planetary radius is a measure of a planet's size.

Related Articles

How Does the Sun Affect an Ecosystem?
How to Calculate Planetary Gear Ratio
What Is the Average Temperature of Jupiter?
What Are the Elements of Uranus?
What Astronomical Instrument Measures the Brightness...
Characteristics of a Star
What Do the Larger Planets Have in Common?
How to Measure the Density of a Planet
What Is the Distance From the Sun to Mercury?
What Are the Two Major Components of an Atom?
Main Types of Ecosystems
How to Find Mass in Weight
How to Calculate Volume of a Circular Cylinder
What Is the Celsius Temperature Range on Venus?
How Does the Sun Affect an Ecosystem?
Distances Between the Planets in the Milky Way
What Is the Difference Between Thick & Thin Atmospheres?
The Ordinal Position of the Planets
What Are the Planets in Our Solar System Held in Their...
How to Compare Earth to Neptune

Dont Go!

We Have More Great Sciencing Articles!