Universe
in sentence
1546 examples of Universe in a sentence
The
universe
is getting bigger and bigger faster and faster driven by a mysterious repulsive force called dark energy.
It's a thousand trillion trillion trillion times bigger than the number of atoms in the entire
universe.
If dark energy were anywhere near this strong, then the
universe
would have been torn apart, stars and galaxies could not form, and we would not be here.
The hope was that a complete combination of Einstein's general theory of relativity, which is the theory of the
universe
at grand scales, with quantum mechanics, the theory of the
universe
at small scales, might provide a solution.
Each one would describe a different
universe
with different laws of physics.
In most of the multiverse, dark energy is so strong that the
universe
gets torn apart, or the Higgs field is so weak that no atoms can form.
We live in a Goldilocks
universe.
But if, in two or three years' time, when the LHC switches off again for a second long shutdown, we've found nothing but the Higgs boson, then we may be entering a new era in physics: an era where there are weird features of the
universe
that we cannot explain; an era where we have hints that we live in a multiverse that lies frustratingly forever beyond our reach; an era where we will never be able to answer the question, "Why is there something rather than nothing?"
Our
universe
gives off the full spectrum of light, too.
To see the
universe
in its full spectrum, we need to have the right eyes, and that means using special telescopes that can help us see beyond visible light.
And the coolest thing of all, no matter the wavelength or energy, the light that we see out in the distant
universe
is the same thing as the light that we can experience and study here on Earth.
So, in every atom, there is some small, but non-zero, probability that for a very, very short period of time, one of its electrons is at the other end of the known
universe.
The end of the
universe
is intimately linked to what the
universe
contains.
Over 100 years ago, Einstein developed the Theory of General Relativity, formed of equations that help us understand the relationship between what a
universe
is made of and its shape.
It turns out that the
universe
could be curved like a ball or sphere.
And that shape determines how the
universe
will live and die.
We now know that the
universe
is very close to flat.
However, the components of the
universe
can still affect its eventual fate.
We can predict how the
universe
will change with time if we measure the amounts or energy densities of the various components in the
universe
today.
So, what is the
universe
made of?
The
universe
contains all the things that we can see, like stars, gas, and planets.
Even though we see them all around us, the total energy density of these components is actually very small, around 5% of the total energy of the
universe.
Just under 27% of the rest of the energy density of the
universe
is made up of what we call dark matter.
We have yet to discover a dark matter particle, but scientists all over the world are searching for this elusive particle or particles and the effects of dark matter on the
universe.
The remaining 68% of the energy density of the
universe
is made up of dark energy, which is even more mysterious than dark matter.
Instead of pulling the
universe
together, as we would expect gravity to do, the
universe
appears to be expanding apart at an ever-increasing rate.
So, as the
universe
expands as it is doing right now, there will be more and more dark energy.
Dark matter and baryonic matter, on the other hand, don't expand with the
universe
and become more diluted.
Because of this property of the cosmological constant, the future
universe
will be more and more dominated by dark energy, becoming colder and colder and expanding faster and faster.
Eventually, the
universe
will run out of gas to form stars, and the stars themselves will run out of fuel and burn out, leaving the
universe
with only black holes in it.
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