Discover many large seas on Saturn's Titan satellite

Scientists of NASA's US aviation agency yesterday (March 13) announced that unmanned probe Cassini has found evidence of large seas on Saturn's largest satellite Titan satellite. One of these seas is larger than the size of the largest lake in the Great Lakes.

Through the analysis of photographs sent from Cassini, scientists say that the sea on Titan satellites contains methane or ethane gas, and this finding further strengthened previous explanations.

Jonathan Lunine, a University of Arizona research scientist and a direct analyst for Cassini data, said: 'We have been hypothesizing the sea on Titan satellites for a long time but now. With modern equipment, we have the first evidence of the great seas that we thought were small lakes before. '

NASA scientists say that Cassini's radar devices have captured several black spots near the north pole of Titan satellites. The largest point is 100,000 square kilometers (39,000 square miles).

Titan is the second largest satellite in our solar system behind Jupiter's Ganymede satellite and it is almost twice as big as our moon.

The image was taken by Cassini ship's radar devices on Tuesday March 13, 2007, scientists believe that the shape and black spots (in the blue zone) show the calmness of the seas.(Photo: NaSa)

(Photo: NaSa)

NASA said that although there is no evidence that these seas contain liquid but the shape and black spots on the radar indicate the stillness of these seas. The liquid can be methane or ethane gas because these compounds are abundant in Titan's atmospheric clouds.

Scientists say that the presence of the sea reinforces the hypothesis that Titan's surface has supplied methane to its atmosphere. Because of these photos, the Cassini mission team is adjusting its radar devices so that it can fly through the dark areas captured by its cameras.

The unmanned probe Cassini was launched into space in October 1997 and it went into Saturn's orbit in July 2004. Cassini was a joint product between NASA, the European airline and the body. Italian aviation authority.

Cassini-Huygens model with human-like characteristics. (NASA photo)

Impressive photos of Saturn

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