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Navigating the seas of Titan, Saturn's largest moon

Date:
September 27, 2012
Source:
Europlanet Media Centre
Summary:
Humanity has landed a rover on Mars. Now, say scientists, it's time to land a boat on Titan. This outlandish scenario could become reality, according to scientists presenting their proposals at the European Planetary Science Congress on Sept. 27.

Renderings of the proposed TALISE probe shows three possible means of propulsion: (top) paddle wheels on either side of the probe; (middle) screws on either side of the probe; and (bottom) wheels on either side of the probe.
Credit: SENER

Humanity has landed a rover on Mars. Now, say scientists, it's time to land a boat on Titan. This outlandish scenario could become reality, according to scientists presenting their proposals at the European Planetary Science Congress on Sept. 27.

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Titan, Saturn's largest moon, is one of the most Earth-like bodies in the Solar System. With a thick atmosphere, a diameter between that of Earth and the planet Mercury, and a network of seas, lakes and rivers, it is in many respects more like a planet than a moon like Earth's.

The Cassini-Huygens mission, which studied Titan extensively in the 2000s, confirmed that lakes, seas and rivers of liquid hydrocarbons (similar to household gas) exist, covering much of the satellite's northern hemisphere. Although it eventually landed on solid ground, the Hugyens lander was designed to be able to float for a short period.

The new plans, called the Titan Lake In-situ Sampling Propelled Explorer, proposes a boat-probe, propelled by wheels, paddles or screws. The probe would land in the middle of Ligeia Mare (the biggest lake, near Titan's north pole), then set sail for the coast, taking scientific measurements along the way. The mission would last around six months to a year.

"The main innovation in TALISE is the propulsion system," says Igone Urdampilleta (SENER), a member of the TALISE team. "This allows the probe to move, under control, from the landing site in the lake, to the closest shore. The displacement capability would achieve the obtaining of liquid and solid samples from several scientific interesting locations on Titan's surface such as the landing place, along the route towards the shore and finally at the shoreline."

Titan's environment is too cold for life as we know it, but its environment, rich in the building blocks of life, is of great interest to astrobiologists. The satellite's atmosphere is made up largely of nitrogen (like Earth's), is rich in organic compounds and hydrogen cyanide, which may have played a role in the emergence of life on Earth.

The TALISE concept is being developed as a partnership between SENER and the Centro de Astrobiologνa in Madrid, Spain. This mission concept is the result of a 'phase 0' study. In the following phases the feasibility study and a preliminary mission architecture would be realised to consolidate a possible technical proposal for future space science mission call.


Story Source:

The above story is based on materials provided by Europlanet Media Centre. Note: Materials may be edited for content and length.


Cite This Page:

Europlanet Media Centre. "Navigating the seas of Titan, Saturn's largest moon." ScienceDaily. ScienceDaily, 27 September 2012. <www.sciencedaily.com/releases/2012/09/120927091530.htm>.
Europlanet Media Centre. (2012, September 27). Navigating the seas of Titan, Saturn's largest moon. ScienceDaily. Retrieved March 31, 2015 from www.sciencedaily.com/releases/2012/09/120927091530.htm
Europlanet Media Centre. "Navigating the seas of Titan, Saturn's largest moon." ScienceDaily. www.sciencedaily.com/releases/2012/09/120927091530.htm (accessed March 31, 2015).

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