Questões de Concurso Sobre inglês para analista em c&t pleno 1-i
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This is how stars die
5,000 light years away in Centaurus, a large constellation in the southern sky, is the Boomerang Nebula, a cloud of gas being expelled from a dying star.
This cloud is one of _________ (bizarre) 1 and ___________ (mysterious) 2 objects in the universe. Here, within the gas streaming outwards, astronomers have found that the temperature drops ___________ (low) 3 nearly absolute zero.
It is, ___________ (far) 4 anyone knows, the coldest place in the universe.
It may also prove to be quite important. Because this ____________ (frigid) 5 place, and objects like it, albeit a tad ___________ (warm) 6– may help astronomers unravel a host of cosmic conundrums, from the violent yet spectacular deaths of stars and the formation of galaxies to cosmic explosions and the origin of life itself.
Death of stars, birth of life
In many respects the Boomerang Nebula is unremarkable. All stars have to die some day. When ___________ (small) 7 stars end, those about eight times _____________ (massive) 8 our own sun, they produce a similar display of gas and dust.
display of gas and dust.
The Boomerang Nebula, a strange and extremely frigid object 5,000 light years away, gradually gives up its secrets
Space is cold. Very cold. ______ 1 fact, empty space, far ______ 2 any star or other hot object, is about -270 degrees C.
While downright frigid – a temperature low enough to freeze hydrogen ______ 3 Earth – that's still about 2.7 degrees ______ 4 absolute zero, the lowest possible temperature. The source _______ 5 those couple ________ 6 degrees is primordial: the leftover glow _______ 7 the big bang that gave birth _______ 8 our universe.
The entire cosmos is bathed ________ 9 this radiation, called the cosmic microwave background. As a result, it's hard to avoid this bit of heat, meaning that _______ 10 most of the cosmos, -270 degrees is as cold as it gets.