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#256 - Nat Geo: administrador da NASA promove nova temporada de "Mars"

Em um evento da National Geographic, Jim Bridenstine, administrador da NASA, se diz empolgado com os passos que os EUA estão dando para voltar à Lua e depois em direção ao Planeta Vermelho.

"Estamos voltando à Lua porque há ciência para ser descoberta lá, há riscos a serem mitigados, tecnologias a serem desenvolvidas e fisiologia humana que precisa ser entendida", disse Bridenstine.

Para o executivo, essa etapa será como um campo de provas e de preparação para que possamos, em seguida, ir à Marte.


Chelsea Gohd (Space):
In the short time since Bridenstine became administrator, researchers have already made critical discoveries about Mars that make our efforts to get to the planet that much more exciting. 
First, Bridenstine said, scientists found complex organic compounds on the surface of Mars.
Second, they discovered that the planet has methane cycles that happen to match seasons on Mars.
Third, scientists found that liquid water resides less than a mile (1.5 kilometers) below the planet's surface. This "doesn't guarantee there's life on Mars, but it increases the probability". 

"Precisamos entender o que houve em Marte", disse Bridenstine:
"Mars used to have three-fourths of its surface covered by an ocean. It used to have a strong magnetosphere that protected it from that harsh radiation environment.
It used to have a thick atmosphere, and over a billion years ago, all of these things went away when its magnetosphere went away."



São Paulo, 12 de novembro 2018