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#099 - TESS: o caçador de planetas da NASA envia suas primeiras imagens

Boa segunda-feira galera. O Transiting Exoplanet Survey Satellite (TESS), lançado no último dia 18/4, começou a sua missão de 2 anos para encontrar superterras em áreas mais próximas do espaço na faixa de 300 anos luz de distância. Como parte da sequência de calibragem das câmeras, o satélite enviou imagens incríveis como a que segue, abrangendo mais de 200 mil estrelas.

crédito: NASA

Mark Austin (Digital Trend):
The two-second exposure is centered on the southern constellation Centaurus. The Coalsack Nebula is featured in the upper right quadrant, and the star Beta Centauri can be seen at the lower left edge.
Keep in mind, this image was produced using only one of TESS’s four cameras. Once the mission becomes fully operational, NASA expects future images to cover more than 400 times as much sky. A “first light” image suitable for detailed scientific analysis will be released in June.
The four cameras will scan 26 entire sectors of the sky, covering both hemispheres during its two-year mission. The observations will focus on possible “transits” of exoplanets, where a far-away planet passes in front of its star causing a measurable drop in brightness. 
“We learned from Kepler that there are more planets than stars in our sky, and now TESS will open our eyes to the variety of planets around some of the closest stars,” said Paul Hertz of NASA. “TESS will cast a wider net than ever before for enigmatic worlds whose properties can be probed by NASA’s upcoming James Webb Space Telescope and other missions.”



2   Passageiros das novas versões do Boeing 777 não terão mais que utilizar ônibus para se locomoverem entre o terminal e a aeronave como acontece em alguns aeroportos do mundo. A Boeing está agora autorizada pela FAA a operar aviões com asas de ponta dobrável que irão facilitar o trânsito nas áreas de atracação. Os primeiros voos comerciais estão previstos para o final de 2018 ou início de 2019.

Once the 777X lands, the wingtips will rotate until they point upwards. Bloomberg notes that the plane will be the only commercial model in widespread use to have such a feature. Some smaller planes have foldable wings, including military aircraft that have to take up as little space as possible on aircraft carriers. NASA, meanwhile, is testing folding wings that adjust midair for supersonic flights.
The agency was concerned that the wingtips could cause safety issues -- some plane crashes occurred after pilots did not secure flaps on wings before takeoff. The FAA required Boeing to have several warning systems to make sure pilots won't attempt a takeoff before the wingtips are locked in the correct position. The FAA also wanted assurances that there was no way the tips would rotate during flight, and that the wings could handle winds of up to 75 miles per hour while on the ground.

crédito: Engadget



Empresas da economia digital

3   A empresa de consultoria política Cambridge Analytica - controlada pela britânica SCL Elections Ltd, entrou nesta quinta-feira (17/5) com um pedido de falência [chapter 7] nos EUA. 

The petition to file bankruptcy was submitted at the U.S. Bankruptcy Court Southern District of New York and was signed on behalf of Cambridge Analytica’s board by Rebekah and Jennifer Mercer, daughters of billionaire Robert Mercer. The Mercer family was one of Trump’s biggest donors.
This past March allegations surfaced that Cambridge Analytica, hired by President Donald Trump’s 2016 U.S. election campaign, improperly used data of 87 million Facebook users beginning in 2014. 
London-based Cambridge Analytica was created in 2013 initially with a focus on U.S. elections, with $15 million in backing from Mercer and a name chosen by former Trump White House adviser Steve Bannon, according to a report by the New York Times.

4   Autoplay do Chrome 66: o Google decidiu voltar a trás no bloqueio da função autoplay que dá poder aos desenvolvedores de ativar vídeos automaticamente quando as web pages são carregadas. O recuo vale apenas para casos específicos como jogos e projetos interativos, atendendo a queixas de desenvolvedores que viram os seus produtos pararem de funcionar. O bloqueio deve retornar no Chrome 70. Até lá o Google espera ter resolvido o problema.


5   Gene Munster, o conhecido analista especializado em assuntos ligados à Apple, voltou a fazer previsões sobre o desenvolvimento de soluções de realidade aumentada (AR).

Gene Munster (LoupVentures):
We believe AR is real and Apple will be a beneficiary. We expect Apple’s AR theme to play out in three phases. First, this fall we expect 2 to 3 new iPhones to join iPhone X with advanced optics for AR (VCSEL arrays). Second, AR apps built using ARKit will slowly become the next gold rush for developers, led by games, ecommerce, and education. Last, we expect Apple will release Apple Glasses late in 2021.
A Apple deve se antecipar com um headset de VR antes de vermos um headset de AR nas prateleiras, considerando o estado da arte da tecnologia e o recente lançamento do Oculus Go - um produto de custo-benefício atrativo na faixa dos $200 USD.

Economia e Política

6   Numa conversa por telefone entre Donald Trump e Mauricio Macri, o presidente dos EUA ratificou o apoio às tratativas da Argentina com o FMI para obter crédito e reduzir o impacto da forte queda do peso argentino. 



Exame / EFE:
Desde 25 de abril, o peso argentino se desvalorizou abruptamente pela forte alta de taxas nos Estados Unidos e pela consequente fuga de capital para esse país, o que transtornou fortemente os setores político, econômico e social argentinos e obrigou o governo a começar a negociar créditos com o FMI e outros órgãos multilaterais para atenuar as consequências.

7   Crianças que entram ilegalmente nos EUA podem ser acomodadas em bases militares. A ação seria "um sinal de que o governo está indo adiante com planos para separar famílias que atravessam a fronteira ilegalmente", segundo o Washington Post. Numa outra narrativa, o Sentinel-Record / Associated Press, citando o Health and Human Services, afirma que o HHS "rotineiramente avalia locações adicionais para alojamento temporário" e que, "em 2014 já usaram bases militares em 3 Estados para abrigar crianças". Comparem as duas narrativas:

Lolita C. Baldor (Sentinel-Record / AP):
Health and Human Services, which oversees about 100 shelters in 14 states for children who are caught at the border, said in a statement that it routinely evaluates additional locations for temporary housing. It did not elaborate on specific plans.
Health and Human Services takes custody of children who cross the border alone within 48 hours, as well as children who are separated from their families when their parents are charged with crimes or the child's welfare is in doubt.
During a surge in children from Central America in 2014, Health and Human Services temporarily used military bases in California, Oklahoma and Texas to house children.
The Department of Homeland Security has limited space to house families that are kept together -- only about 2,700 beds at three family detention centers in Texas and Pennsylvania. In April alone, people who came as families accounted for nearly 10,000 Border Patrol arrests. Another 4,300 were unaccompanied children.

Nick Miroff and Paul Sonne (Washington Post):
The Trump administration is making preparations to hold immigrant children on military bases, according to Defense Department communications, the latest sign the government is moving forward with plans to split up families who cross the border illegally.
According to an email notification sent to Pentagon staffers, the Department of Health and Human Services (HHS) will make site visits at four military installations in Texas and Arkansas during the next two weeks to evaluate their suitability to shelter children.
The bases would be used for minors under 18 who arrive at the border without an adult relative or after the government has separated them from their parents. HHS is the government agency responsible for providing minors with foster care until another adult relative can assume custody. 

8   Nicolás Maduro se reelegeu presidente da Venezuela neste domingo (20/5) com 67,7% dos votos contra o seu adversário Henri Falcón. 46% dos eleitores foram às urnas vs 80% no pleito anterior. A gestão Maduro é rejeitada por mais de 2/3 dos venezuelanos. Argentina, Chile, Panamá, Costa Rica, EUA e União Europeia não reconhecem a legitimidade da eleição. 


São Paulo, 21 de maio de 2018