Monthly Archives: June 2007

Star Magnitude System For Classifying The Brightness Of Stars

A system of magnitude numbers (mag for short) is used to classify the brightness of the stars we see in the sky. This magnitude system was actually first devised by Hipparchus, the Greek astronomer, a long time ago in the … Continue reading →

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Saturn – Planet Profile

  Saturn is another “Gas Giant” like Jupiter, although not quite as big. Nevertheless, Saturn is the second largest planet in the Solar System and is huge compared to Earth. It has a diameter of around 75,000 miles at the … Continue reading →

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Mercury – Planet Profile

Mercury is the closest planet to the Sun. It averages about 36 million miles from it. This figure is very much an average because interestingly, Mercury has a notably elliptical orbit. Its distance from the Sun varies from about 28 … Continue reading →

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