Question

1)
Fill the gap: As has been famously said, space is the final .
2)
Fill the gap: … space exploration and discovery only began in in the mid 20th century.
3)
Fill the gap: … an incredible of engineering.
4)
Fill the gap: … and was its own galaxy.
5)
Fill the gap: Not only is Venus' atmosphere hot,
6)
Fill the gap: The soviets initially claimed the craft reached the surface ,
7)
Fill the gap: It was also the first space craft to photos from another planet!
8)
Fill the gap: As it collapses the hydrogen in the outer shells begin the process of and the entire star begins fusing hydrogen all at once.
9)
Fill the gap: The original universe consisted of hydrogen and helium- every other element on the periodic table and every single thing you …
10)
Fill the gap: These are from the formation of the solar system, held in place by the weak gravity of the very distant sun.
11)
Fill the gap: … sending debris out of the atmosphere.
12)
Fill the gap: After ten days of to the vacuum of space,
13)
Fill the gap: The first theory the existence of black holes was from an English clergyman named John Michell in November 1784.
14)
Fill the gap: … taking them from the of theory to the realm of reality.
15)
Fill the gap: The violence of their merging created a through space-time that was detectable here on Earth millions of light years away!

1