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International Edition Winners 2011: Romania, Target 2, Grade 5-6

International Edition Winners 2011: Romania, Target 2, Grade 5-6


Raluca Bran
Rhea and Titan
Rhea and Titan
Raluca Bran

5th Grade
Colegiul National
Iasi, Romania

Teacher: Mihaela Fiscutean



"Saturn is the sixth planet of the Solar System. It moves around the Sun in 29.5 years and it measures 119.300 km but its rings are not always in the same position.

In 1980 they were in a bent position from left to the right then, in 1989 they were bent onward. In 1996 they were detected bent from right to the left and in 2004 they were bent backwards. The first person who first saw Saturn's rings was Galileo Galilei by means of a telescope. There are two theories regarding the existance of the Saturn's rings, the first one is that they came from a moonlet of the planet and the second one is that they appeared from the waste of Saturn's nebulae.

Like other big planets, Saturn has more satellites but the most important ones, in size and not only, are Titan and Rhea. Scientists discovered that Titan is the only satellite from the Solar System which has its own atmosphere made of azoth and methane. They also discovered that on the surface of the satellite are flowing streams of liquid methane and dunes of frozen methane cover large areas of the satellite's surface.

Rhea is the second satellite of Saturn and it was discovered in 1672 by the French astronomer Cassini who named it after a character from the Greek mythology. The surface of Rhea is in an on going state and in its atmosphere were discovered small quantities of oxygen.

It is important that we watch closely the transition of Titan in order to find out the source of the methane streams which flow on its surface. Considering the fact that the fuel resources of the Earth are limited, people could some day find ways of methane transport and use provided abundantly by this satellite.

We should watch Rhea in order to see if the oxygen there can encourage the emergence of a life form. If we could use that oxygen then, we could build a space base so as to explore the Universe more closely. It is widely known the fact that where there is water under all its shapes, there are also life forms and these satellites can be a research source for new information."