2014-11-27

Imagens do Mundo - Hôi An - Vietnam

Una pareja de novios se fotografía delante del puente cubierto, construido por los japoneses. Es el único puente que se conoce que está unido por un lado a una pagoda budista. Une el barrio comercial japonés,oeste, con el barrio chino,este.

Foto - Castelo de Palmela - Portugal - 11-09-2014

"Castelo de Palmela"

11-09-2014
JoanMira

Astronomy picture of the day 27-11-2014 - Galileo's Europa Remastered

2014 November 27
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Galileo's Europa Remastered 
Image Credit: NASAJPL-CaltechSETI InstituteCynthia Phillips, Marty Valenti
Explanation: Looping through the Jovian system in the late 1990s, the Galileo spacecraft recorded stunning views of Europa and uncovered evidence that the moon's icy surface likely hides a deep, global ocean. Galileo's Europa image data has been newly remastered here, using improved new calibrations to produce a color imageapproximating what the human eye might see. Europa's long curving fractures hint at the subsurface liquid water. The tidal flexing the large moon experiences in its elliptical orbit around Jupiter supplies the energy to keep the ocean liquid. But more tantalizing is the possibility that even in the absence of sunlight that process could also supply the energy to support life, making Europa one of the best places to look for life beyond Earth. What kind of life could thrive in a deep, dark, subsurface ocean? Consider planet Earth's own extreme shrimp.

2014-11-26

Máquina transforma água em combustível


O Power Liquid é o aparelho que tem a capacidade de transformar água (H2O) e dióxido de carbono (CO2) em hidrocarbonetos líquidos, como a gasolina sintética e o gasóleo. A base está no processo Fischer-Tropsch, que data de 1952. Esta nova tecnologia foi agora desenvolvida pela empresa alemã Sunfire GmbH. Esta pode ser uma solução para o futuro do mercado dos combustíveis, diminuindo a dependência dos países em relação às petrolíferas. Além disso, o Power Liquid funciona de uma forma ecológica. A empresa afirmou que a taxa de eficácia do Power Liquid é de 70%. No estado atual, o aparelho recicla 3.2 toneladas de dióxido de carbono por dia, produzindo um barril de combustível. 

Imagens do Mundo - Parque de Hanau (Frankfurt) - Alemanha

Paraje de un parque de Hanau, cerca de Frankfurt, en el que el reflejo del agua dibuja una circunferencia casi perfecta a su paso por un puente.

2014-11-24

Astronomy picture of the day 24-11-2014 - Soaring over Titan (video)

Soaring over Titan 
Video Credit: Cassini Radar MapperJPLUSGSESANASA
Explanation: What would it look like to fly over Titan? Radar images from NASA's robotic Cassini satellite in orbit around Saturn have been digitally compiled to simulate such a flight. Cassini has swooped past Saturn's cloudiest moon several times since it arrived at the ringed planet in 2004. The virtual flight featured here shows numerous lakes colored black and mountainous terrain colored tan. Surface regions without detailed vertical information appear more flat, while sufficiently mapped regions have their heights digitally stretched. Among the basins visualized is Kraken Mare, Titan's largest lake which spans over 1,000 kilometers long. Titan's lakes are different from Earth's lakes in that they are composed of hydrocarbons with similarities to liquid natural gas. How Titan's lakes were created and why they survive continues to be a topic of research.