Choose the alternative that fills in correctly and respectively the blanks in the sentences below with the missing preposition.
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.
