When you want to observe the night sky without using a telescope, you should first of all choose a night that is completely cloudless. Also, remember that the moon should be either absent or in its smallest size.

Though astronomy and astrology may sound similar, they are basically different subjects studied by human beings. There are a few basic similarities though which may confuse some people about the individuality of the two branches. For example, both the subjects deal with observation of the solar system and planetary movements. The pathways of the sun and the moon are important in both the studies.

The whole mankind has almost spent more than 2000 years to understand the Universe and the solar system that we live in. Researchers since past thousands of years have recorded whatever they came to know about the Universe. The curiosity to know about the universe in a few astronomers has revealed a lot of secrets of heaven. Man from the ancient times always wanted to know about the Universe and explore the space. In the year 1959, NASA (National Aeronautics and Space Administration) in the United States short listed 7 people to be the first astronauts that will travel in the space.

Aristarchus was a renowned Greek mathematician and astronomer from Samos, who lived approximately in the 310 BC through 250 BC. People from the ancient world and the modern world know very little about the great Greek astronomer, even the scientists and mathematicians in the ancient times have written little about Aristarchus, of which one of them was Archimedes. He was known to be student of Strato of Lampsacus, the chief of the Aristotle's Lyceum. It s considered that the studies of Aristarchus did not took place in Athens, but at Alexandria when the Strato was the chief of the Lyceum.

Jupiter is the largest planet in the Solar System. It is located around 500 million miles from the Sun, and its atmosphere is made up of 90 percent of hydrogen, 10 percent of helium and little bit of methane and ammonia. Besides the sun, Jupiter also emits heat into our Solar System.