Universe
in sentence
1546 examples of Universe in a sentence
And the more you understand that, the better you would understand what this dark energy that the
universe
is made of is all about.
A philosophical opinion about the nature of the universe, which is held by the vast majority of top American scientists and probably the majority of the intelligentsia generally, is so abhorrent to the American electorate that no candidate for popular election dare affirm it in public.
The
universe
is much bigger than our prophet said, grander, more subtle, more elegant'?
A religion, old or new, that stressed the magnificence of the
universe
as revealed by modern science, might be able to draw forth reserves of reverence and awe hardly tapped by the conventional faiths."
In this vast unfinished symphony of the universe, life on Earth is like a brief measure; the animal kingdom, like a single measure; and human life, a small grace note.
(SL: Thank you.) (Applause) The
universe
is really big.
There are approximately a hundred billion galaxies in the observable
universe.
The age of the universe, between now and the Big Bang, is a hundred billion in dog years.
Which tells you something about our place in the
universe.
As a cosmologist, I want to ask, why is the
universe
like this?
One big clue we have is that the
universe
is changing with time.
So we say the
universe
is expanding.
In the past, the
universe
was more dense, and it was also hotter.
The thing that doesn't make sense to us as much is that the universe, at early times, near the Big Bang, was also very, very smooth.
What you have to think about is we have a
universe
with a hundred billion galaxies, a hundred billion stars each.
Keeping the
universe
very, very smooth at early times is not easy; it's a delicate arrangement.
It's a clue that the early
universe
is not chosen randomly.
The fact that the entropy of the
universe
was low was a reflection of the fact that the early
universe
was very, very smooth.
In every one of these books, every one of these sets of lectures, he emphasized this puzzle: Why did the early
universe
have such a small entropy?
The arrow of time cannot be completely understood until the mystery of the beginnings of the history of the
universe
are reduced still further from speculation to understanding."
The reason the problem has gotten worse, rather than better, is because in 1998 we learned something crucial about the
universe
that we didn't know before.
The
universe
is not only expanding.
Individual galaxies are speeding away from us faster and faster so we say the
universe
is accelerating.
Unlike the low entropy of the early universe, even though we don't know the answer for this, we at least have a good theory that can explain it, if that theory is right, and that's the theory of dark energy.
And this energy, according to Einstein, exerts a push on the
universe.
Because dark energy, unlike matter or radiation, does not dilute away as the
universe
expands.
The amount of energy in each cubic centimeter remains the same, even as the
universe
gets bigger and bigger.
This has crucial implications for what the
universe
is going to do in the future.
For one thing, the
universe
will expand forever.
Back when I was your age, we didn't know what the
universe
was going to do.
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