Saturn
Solar System Orbits
[/caption] One of the International Astronomical Union’s (IAU) requirements for a celestial body to be classified as a planet (or…
Naked Saturn
[/caption] Here's one of the first raw images of Saturn taken by the Cassini spacecraft just after equinox, on August…
More Equinox Oddities in Saturn’s Rings
[/caption] Today, August 11, 2009, is Saturn's equinox. As we've been saying for a few months, the rings are going…
Radius of the Planets
[/caption] One way to measure the size of the planets is by radius. Radius is the measurement from the center…
Volume of the Planets
[/caption] There are a number of measurements that astronomers use, including mass, surface area, diameter, and radius, to determine the the…
Mythology of the Planets
[/caption] Thousands of years ago, ancient civilizations turned to the heavens, marveling at their wonders. These ancient people worshipped various…
Surface of the Planets
[/caption] People have been intrigued for centuries by whether life could exist on other planets. While we now know that…
Giant Planets
[/caption] While the inner four planets seem large, they are nothing compared to the four outer planets, which are also…
All the Planets
[/caption] Since 2006, due to a controversial decision by the International Astronomical Union (IAU) that demoted Pluto to a dwarf…
Symbols of the Planets
In our long history of staring up at the stars, human beings have assigned various qualities, names, and symbols for…