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TESS o caçador de planetas da NASA

Update: 21 de maio de 2018 (#099): 

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.”




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