Titan

Discovered in 1655 by the Dutch astronomer Christiaan Huygens, Titan is the biggest of the 52 known moons orbiting Saturn. It is a cold world enclosed by a thick, hazy atmosphere impenetrable by telescopes and cameras.

With an equatorial radius of 2,575 kilometers (1,600 miles), Titan is the second largest moon in our solar system. It's bigger than our own moon and even the planet Mercury. Only Jupiter's moon Ganymede is larger than Titan, with a diameter barely 112 kilometers (62 miles) greater.

The temperature at Titan's surface is about minus 178 degrees C (minus 289 degrees F).

Titan orbits Saturn at a distance of about 1.2 million kilometers (745,000 miles), taking almost 16 days to complete a full orbit - 15.94 days to be exact.

Titan is of great interest to scientists because it is the only moon in the solar system known to have clouds and a mysterious, thick, planet-like atmosphere. In 1980, NASA's Voyager 1 spacecraft tried to take close up images of the natural features of Titan's landscape but was unable to penetrate the thick clouds. Instead, the images showed only slight color and brightness variations in the atmosphere. Titan's atmospheric pressure is about 60 percent greater than Earth's - roughly the same pressure found at the bottom of a swimming pool.

In 1994, NASA's Hubble Space Telescope recorded pictures of Titan, which suggested that a huge bright "continent" exists on the hemisphere that faces forward in orbit. These Hubble results don't prove that liquid "seas" exist, however; only that Titan has large bright and dark regions on its surface.

NASA's Cassini-Huygens spacecraft (currently orbiting Saturn) should shed new light on Titan's mysteries. The spacecraft's instruments are designed to reveal many of Titan's characteristics. During dozens of flybys, the Cassini orbiter will map Titan with cloud-penetrating radar and collect atmospheric data. The Huygens probe dove through Titan's dense atmosphere on Jan. 14, 2005 with instruments capable of analyzing its components.

Combined with the "big picture" information that the Cassini orbiter will collect during Titan flybys, data from the Huygens probe will provide scientists with critical information that may shed light on ancient questions such as "Where did we come from?" And, "How did the planets form?"

Because of the extremely cold temperatures typical of celestial bodies that are that far away from the Sun, the structure of Titan's chemical atmosphere is in a state of deep freeze. It is this chemical composition that interests scientists a great deal because Titan's atmosphere might consist of compounds similar to those present in the primordial days of the Earth's atmosphere. Titan's thick cloudy atmosphere is mostly nitrogen, like Earth's, but may contain much higher percentages of "smog-like" chemicals such as methane and ethane. The smog may be so thick that it actually rains "gasoline-like" liquids. The organic nature of some of the chemicals found in Titan's atmosphere might indicate that this fascinating moon could harbor some form of life. (NASA)

Category:

Science & Technology

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• Titan
• Saturn
• moon
• satellite
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• system
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• haze

[MariaGarcia281]

My newest upload:

Meteors Target Earth

-Our moon and Earth get struck by space objects at approximately the same rate - then why is it that our surface doesn't appear with craters as prominently as the moon?

See video

[MariaGarcia281]

NASA NEWS RELEASE

Two of the Milky Way's Spiral Arms Go Missing

"...new images from NASA's Spitzer Space Telescope are shedding light on the true structure of the Milky Way, revealing that it has just two major arms of stars instead of the four it was previously thought to possess."

"Our own sun might have once resided in a different arm. Since it was formed more than 4 billion years ago, it has traveled around the galaxy 16 times."

Find out more at NASA website

[TallSky]

as like your other videos, very interesting

:0)

[MariaGarcia281]

A very primordial Earth-like phase - quite intriguing

on a side note: I remember Charlton Heston best by his classic line "Damned dirty APES!"

Although I'm unsure if at that time they knew we were also primates @.@

[TallSky]

Are the primates the ones holding cell phones at 65mph on the freeway, or maybe they are those corporate bank CEO's that come up with those imaginative fees, or, etc. etc...?

[MariaGarcia281]

well, I see many picking their noses while driving - it's hard to tell them apart ;-)

[brutaka359]

awsome!

[candyspace1]

Ammonia meets methane = bright spot.?

[quantumuncertainty]

Excelent video, thanks for sharing.

[leeon1123]

impressive keep this up and and u will be famus

[mojeda111]

i think that titan used to be a planet but jupiter's gravitational pull somehow was stronger than the suns and stole titan.

[weemill]

Whats the song name?