5 . Directions: Fill in eat blank with a proper word chosen form the box. Each word can be used only once. Note that there is one word more than you need.
A. arrives B. observable C. boundless. D. contained. E. distancing. F. expansion G. lies H. parallel I. perceiving J. threads K. volume |
What Comes After Space?
Looking at a clear night sky you witness the vastness of space, which holds everything humans know to exist. To find out what 1 beyond a good place to start is to determine where the universe ends. However, the problem is that scientist are uncertain about where space ends or whether it ends at all.
The 2 universe
The furthest humans can see out into space,using all the technology currently available to us,is 46 billion light years (alight year is the distance that light can travel in one year,and is equivalent to about 9. 5 million million kilometres). The 3 of space that humans can see is called the visible universe. Beyond this, it remains a mystery whether it’s an expanse of more galaxies and stars or possibly the edge of the universe. Some think that the universe is 4 , meaning space goes on forever in every direction. In this case,there is nothing after space,because space is everything.
Moving further away
Experts have captured images of the entire Earth from space,and some astronauts have personally witnessed its beauty from orbit. Perhaps 5 the limits of the universe would also be possible too, if only humans knew where to go to look for it.
Another challenge is the universe’s rapid 6 . As galaxies move further away their light takes longer to reach us. Eventually, some galaxies may be so distant that their light never 7 . This might imply that any edge— and whatever is on the other side — is increasingly 8 itself from us. Regardless of these uncertainties, scientists still spend a lot of time thinking about what comes after space.
Many universes?
It’s possible that there isn’t just one universe, and that our universe is just one small part of a “multiverse”. Perhaps our universe is 9 within its own distinct region of space, separated from others by vast expanses of nothingness. Or maybe 10 universes exist pressed tightly against each other. Getting an idea of the universe’s true shape may help astronomers find out whether it has an edge. What comes after that could be an even great mystery.
