Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Spanish scientists confirm the existence of electrical activity on Titan

29.07.2008
Physicists from the University of Granada and University of Valencia have developed a procedure for analysing specific data sent by the Huygens probe from Titan, the largest of Saturn's moons, “unequivocally” proving that there is natural electrical activity in its atmosphere.

The scientific community believe that the probability of organic molecules, precursors of life, being formed is higher on planets or moons which have an atmosphere with electrical storms.

The researcher, Juan Antonio Morente, from the Department of Applied Physics at the University of Granada, indicated to SINC that Titan has been considered a “unique world in the solar system” since 1908 when, the Spanish astronomer, José Comas y Solá, discovered that it had an atmosphere, something non-existent on other moons. “On this moon clouds with convective movements are formed and, therefore, static electrical fields and stormy conditions can be produced”, he explained.

“This also considerably increases the possibility of organic and prebiotic molecules being formed, according to the theory of the Russian biochemist Alexander I. Oparín and the experiment of Stanley L. Miller”, which managed to synthesise organic compounds from inorganic compounds through electrical discharges. “That is why Titan has been one of the main objectives of the Cassini-Huygens joint mission of NASA and the European Space Agency”, added the researcher.

Morente indicated that in order to detect natural electrical activity on planets such as Earth or moons such as Titan the so-called “Schumann resonances”, a set of spectrum peaks in the extremely low frequency (ELF) portion of the radio spectrum, are measured. These peaks are produced due to the existence between the ionosphere and the surface of a huge resonant cavity in which electromagnetic fields are confined. They present two basic components: a radial electrical field and a tangential magnetic field, accompanied by a weak tangential electrical field (one hundred times smaller than the radial component).

The electrical field was measured by the mutual impedance probe (MIP), one of the instruments transported by the Huygens probe. The MIP consisted of four electrodes, two transmitters and two receptors, with a transmitter-receptor pair on each one of the probe’s folding arms. The MIP was primarily used for measuring the atmosphere’s electrical conductivity, but between each measurement of this physical magnitude it also acted as a dipolar antenna, measuring the natural electrical field in the atmosphere.

“In a stable fall, without balancing, the MIP would have measured the electrical field’s weak tangential component”, said Morente, “but fortunately a strong wind balanced the probe and the electrodes measured a superposition of that tangential and radial component”.

Despite this, the electrical field spectrums received directly from Huygens did not follow the patterns the scientists expected, as they were relatively flat and no Schumann resonances were observed. However, the team of Spanish researchers did manage to devise a procedure for revealing the hidden Schumann resonances, based on the separation of time signals known as “early” and “late-time”, which made it possible to obtain “irrefutable proof” that natural electrical activity does exist in Titan's atmosphere.

In the work, subsidised by the former Ministry of Education and Science, Government of Andalusia and the European Union, it was also explained that the atmosphere of this one of Saturn’s moon is an electromagnetic medium with high losses, and that its resonant cavity is less ideal than the Earth’s.

| alfa
Further information:
http://www.plataformasinc.es

More articles from Physics and Astronomy:

nachricht NASA detects solar flare pulses at Sun and Earth
17.11.2017 | NASA/Goddard Space Flight Center

nachricht Pluto's hydrocarbon haze keeps dwarf planet colder than expected
16.11.2017 | University of California - Santa Cruz

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

Im Focus: Wrinkles give heat a jolt in pillared graphene

Rice University researchers test 3-D carbon nanostructures' thermal transport abilities

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

NASA detects solar flare pulses at Sun and Earth

17.11.2017 | Physics and Astronomy

NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures

17.11.2017 | Health and Medicine

The importance of biodiversity in forests could increase due to climate change

17.11.2017 | Studies and Analyses

VideoLinks
B2B-VideoLinks
More VideoLinks >>>