Descoberta água em planeta fora do sistema solar

[deadcow]

 

Um grupo internacional de cientistas detectou vapor d'água na atmosfera de um exoplanetas (planetas externos ao sistema solar) e que está há cerca de 60 anos-luz da Terra, disse nesta quinta Ignasi Ribas, um dos pesquisadores envolvidos na descoberta.

O físico, membro do Instituto de Ciências do Espaço (CSIC) de Barcelona (nordeste da Espanha) e do Instituto de Estudos Espaciais da Catalunha (IEEC), explicou que já se suspeitava que nos exoplanetas havia água, mas é a primeira vez que sua existência é comprovada com evidências científicas.

O estudo foi publicado na última edição da revista Nature e sua principal autora é Giovanna Tinetti, da Agência Espacial Européia (ESA).

Além disso, participaram do trabalho pesquisadores da Universidade de Harvard (Estados Unidos), e de entidades científicas de países como a França, Taiwan e Reino Unido.

Segundo Ribas, "é a primeira vez que se detecta vapor de água em um exoplaneta, e além disso, em grandes quantidades", tal como pôde ser observado com o telescópio espacial infravermelho Spitzer.

A descoberta, disse, "não se trata unicamente de vestígios de água, mas a molécula de água é o composto dominante na atmosfera".

Este exoplaneta, batizado como HD 189733b, está há cerca de 60 anos luz da Terra, com o que, explicou, se trata de um corpo "vizinho".

A vantagem oferecida por este exoplaneta para seu estudo é que, devido à inclinação de sua órbita, ele transita na frente de sua estrela, com uma conseqüente diminuição do brilho ao ser observado da Terra.

Além disso, a relação de tamanhos entre o planeta e a estrela é muito propícia, de modo que a diminuição é notável.

Até o momento, continuou, para tentar detectar água tinha sido usado a ocultação do planeta por parte da estrela para estudar a emissão na região infra-vermelha do espectro.

Mas, para surpresa dos cientistas, as pesquisas não tiveram sucesso.

Neste trabalho, os pesquisadores realizaram suas observações "ao contrário", ou seja, quando o planeta transitava diante da estrela.

Assim, comprovaram que o tamanho do planeta é ligeiramente diferente em comprimentos de onda diferentes, também no infravermelho.

As diferenças de tamanho observadas se correspondem perfeitamente com uma maior ou menor absorção por parte da molécula de água, e isto sugere que o vapor d'água está presente na atmosfera.

Fonte: Terra





..isso complementa isso: http://www.examiner.com/x-2383-Honol...fe-is-imminent

[Suprido]

é bixo, vao ataca nois :x

[Dark Falcon]

Nada, eles vão vir pra terra só pra acessar a DS e ser positivados.

[Eon]

VELHA!!!

http://forum.darkside.com.br/vb/showthread.php?t=17991

tipo... muito velha.

[wiseman]

Pensei que era pra falar disso:

http://www.examiner.com/x-2383-Honol...fe-is-imminent

Postado por Texto Longo em Ingles do link acima

Official disclosure of extraterrestrial life is imminent

An official announcement by the Obama administration disclosing the reality of extraterrestrial life is imminent. For several months, senior administration officials have been quietly deliberating behind closed doors how much to disclose to the world about extraterrestrial life. Dissatisfaction among powerful institutions such as the U.S. Navy over the decades-long secrecy policy has given a boost to efforts to disclose the reality of extraterrestrial life and technology.

The impending disclosure announcement follows upon the secret implementation of a year long openness policy on UFOs and extraterrestrial life. Over the period February 12-14, 2008, the United Nations held closed doors discussions where approximately 30 nations secretly agreed on a new openness policy on UFOs and extraterrestrial life in 2009. The openness policy was implemented but never publicly announced due to threats against UN diplomats not to disclose details of the secret agreement. h The secret UN agreement was based on two conditions. First, UFOs would continue to appear around the world; and second, the openness policy would not lead to social unrest in liberal democracies. Both conditions have been satisfied making it possible for the next stage to begin – official disclosure of extraterrestrial life.

Obama’s September 24, 2009 chairing of the UN Security Council meeting on nuclear non-proliferation and disarmament, signaled his emerging leadership role in tackling major global issues such as nuclear weapons. The Nobel Peace Prize was an important step in giving global legitimacy to President Obama in making an extraterrestrial disclosure announcement. Obama is therefore poised to play a prominent role in the increased global governance that will be necessary after an extraterrestrial disclosure announcement. The timing would most likely coincide sometime soon after his Nobel Peace Prize acceptance speech on December 10, 2009 in Oslo, Norway.

There have been various sources that have revealed deliberations are underway to make an announcement concerning the existence of extraterrestrial life by the end of 2009. These include, Dr Pete Peterson, a whistleblower who has recently emerged revealing high level discussions have taken place concerning announcing the existence of extraterrestrial life. In a Project Camelot interview, Dr Peterson revealed that “Obama is planning to disclose the reality of ET contact by the end of the year; and that most, but not all, of the ET visitors are friendly.”

Another source is David Wilcock, a prominent researcher of emerging scientific paradigms. Wilcock has been told by additional independent sources that extraterrestrial disclosure will take place by the end of 2009. He furthermore claimed in a Coast to Coast AM radio interview that “a 2-hour international TV special has already been booked that will introduce an alien species, similar to humans, to the world.”

In addition, popular NASA and space researcher, Richard Hoagland, has publicly come forward to reveal that the October 9, LCROSS ‘bombing’ mission of the moon, discovered an ancient base at the moon’s South Pole. Reviewing the scientific data achieved by NASA’s LCROSS mission, Hoagland concluded, also on the popular late night Coast to Coast AM radio show, that “LCROSS is part of a carefully constructed campaign to prepare the populace for imminent disclosure. The President of the United States will soon announce that scientists have discovered ruins on the moon, he added. Nobody saw the LCROSS debris plume because the probes struck a building which swallowed the effects of the explosion.”

Finally, two independent and confidential sources have revealed to me that face to face meetings have recently occurred between U.S. military officials with one or more groups of extraterrestrial visitors. This has allegedly led to confidence being built for future cooperation with the extraterrestrials that will be formally announced to the world public either at the end of 2009, or early 2010.

In conclusion, a diverse number of sources and events point to some form of extraterrestrial disclosure being made by the end of 2009, or early 2010. Official disclosure will most likely emerge in either of two scenarios. One is that President Obama will announce the existence of extraterrestrial visitors, and describe one or more of these to the world. This scenario is supported by Peterson, Wilcock, and my own confidential sources. The second scenario is that an announcement will be made concerning the discovery of artificial structures at the moon’s South Pole, as revealed by the LCROSS mission. This scenario is supported by Hoagland.

Which ever of the above scenarios is used for announcing the existence of extraterrestrial life or technology, President Obama will figure prominently. Behind the scenes, powerful institutions are ensuring that nothing derails the planned disclosure announcement. The disclosure will follow upon a year of greater government openness on UFOs in accord with a policy secretly developed at the United Nations. If extraterrestrial disclosure does occur at the end of 2009 or early 2010, President Obama will lead an unprecedented effort to promote global governance through the United Nations. The Obama administration and its supporters are poised to take a bold step forward in helping our planet become an interplanetary culture that openly deals with the challenges posed by extraterrestrial life.

[LuCk]

60 anos luz?
se bobiar o mundo acaba e não chegamos lá ainda

[diferent]

Eu queria que fosse verdade pra ver os debates "amigaveis" entre ateus e religiosos.

[didz]

Postado por Eon

VELHA!!!

http://forum.darkside.com.br/vb/showthread.php?t=17991

tipo... muito velha.

ehaheua
porra!

[XtremE]

oldzor... e ainda hoje as mulheres não sabem ver nem água no radiador... :rolazoio:

[Eon]

Velha sua piada também Xtreme, vc fez a mesma no outro tópico!!!

EHUEHAUHAUHAUAHAUHEUHAUHAUH

[deadcow]

OUCH! uhauauhe malz ae velha mto velha mesmo! uhauhahue é que vi a "novidade" nos telejornais achei que n tivesse sido postado, btw tem o linkzin sobre ovni's do obama.

[The Bam]

Postado por wiseman

Pensei que era pra falar disso:

http://www.examiner.com/x-2383-Honolulu-Exopolitics-Examiner~y2009m10d21-Official-disclosure-of-extraterrestrial-life-is-imminent

e essa eh real?

[SuckerBuster]

UASDuasDUHASUDhsaudhAUSd
curti a piada do xtreme

[AracnotroN]

Puxa que legal hein?

Já estou me sentindo bem melhor. Obrigado!

[Dr_Phibes]

Os etzinhos de lá agora estão só a 58 anos luz da gente...