Sardinha

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Como hoje é o dia dela, aqui ficam alguns dados sobre o petisco mais famoso de Lisboa.

SARDINHA

Sardinha

Sardina pilchardus

Habitat: Atlântico nordeste: Desde o Mar do Norte até ao Mar Mediterrâneo e ao Senegal.

Nível de conservação (Estatuto IUCN): Pouco preocupante

BIOLOGIA

A sardinha tem o corpo alongado, azul ou verde no dorso e prateado no ventre. Esta espécie forma grandes cardumes que se alimentam de plâncton, como pequenos crustáceos, microalgas e ovos de peixes. Durante o verão e até meados do outono acumula gordura, o que lhe permite ter energia para se conseguir reproduzir nos meses seguintes.

CONSERVAÇÃO

Sendo uma das principais pescarias em Portugal, existe um plano de gestão para a pesca da sardinha. Este inclui um limite de 180 dias de pesca por ano, por embarcação, períodos de interdição de captura e limites à pesca de juvenis. Esta espécie tem um tamanho mínimo legal de captura de 11 centímetros.

CURIOSIDADES

Durante o verão esta espécie é mais abundante na costa portuguesa devido a um fenómeno conhecido como afloramento costeiro ou upwelling. A água da superfície é afastada pela ação do vento, permitindo a subida de águas mais profundas, frias e ricas em plâncton.

In Oceanário de Lisboa

https://www.oceanario.pt/exposicoes/exposicao-permanente/peixes/sardinha

 

Anúncios

Mysterious Methane on Mars

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Space Today

FEATURE: Mysterious Methane on Mars

NASA Finds Ancient Organic Material, Mysterious Methane on Mars

NASA’s Curiosity rover has found new evidence preserved in rocks on Mars that suggests the planet could have supported ancient life, as well as new evidence in the Martian atmosphere that relates to the search for current life on the Red Planet. While not necessarily evidence of life itself, these findings are a good sign for future missions exploring the planet’s surface and subsurface.

The new findings – “tough” organic molecules in three-billion-year-old sedimentary rocks near the surface, as well as seasonal variations in the levels of methane in the atmosphere – appear in the June 8 edition of the journal Science.

Organic molecules contain carbon and hydrogen, and also may include oxygen, nitrogen and other elements. While commonly associated with life, organic molecules also can be created by non-biological processes and are not necessarily indicators of…

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“First Man”

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Space Today

“First Man”

A look at the life of the astronaut, Neil Armstrong, and the legendary space mission that led him to become the first man to walk on the Moon on July 20, 1969.

Ryan Gosling in 'First Man'

A Biopic on the life of the legendary American Astronaut Neil Armstrong from 1961-1969, on his journey to becoming the first human to walk the moon. Exploring the sacrifices and costs on the Nation and Neil himself, during one of the most dangerous missions in the history of space travel.

Director:

Damien Chazelle

Writers:

James R. Hansen (book), Nicole Perlman (earlier screenplay) | 1 more credit »

Stars:

Claire Foy, Ryan Gosling, Pablo Schreiber

Release Date:

12 October 2018 (USA)

In IMDB

https://www.imdb.com/title/tt1213641/

Ryan Gosling and Claire Foy as Neil and Janet Armstrong

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From Horizon to Horizon: Celebrating Fifteen years of Mars Express

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Space Today

FEATURE: From Horizon to Horizon: Celebrating Fifteen years of Mars Express

Mars Express, so called because of the rapid and streamlined development time, represents ESA’s first visit to another planet in the Solar System. The spacecraft borrowed technology from ESA’s Rosetta mission (currently accompanying comet 67P/Churyumov-Gerasimenko along its orbit) and the Mars 96 mission. Since beginning science operations in 2004, the durable orbiter has given scientists an entirely new view of Earth’s intriguing neighbour, and is helping to answer fundamental questions about the geology, atmosphere, surface environment, history of water and potential for life on Mars.

In ESA

http://sci.esa.int/mars-express/

Mars Horizon to Horizon ©ESA/DLR/FU Berlin, CC BY-SA 3.0 IGO

Fifteen years ago, ESA’s Mars Express was launched to investigate the Red Planet. To mark this milestone comes a striking view of Mars from horizon to horizon, showcasing one of the most intriguing parts of the martian surface.

On 2 June…

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