Answer. When scientists talk about the expanding universe, they mean that
it has been growing ever since its beginning with the Big Bang
. … In other words, the universe has no center; everything is moving away from everything else.
What would happen if the universe was expanding?
The
Universe would neither be expanding or contracting
. Eventually stars would exhaust all the gas needed for their formation. We’d literally run out of gas. Fewer new stars would be born, and the existing ones would burn out.
How we know the universe is expanding?
While the rate of expansion has been hotly debated within the astrophysics community, the space in between galaxies is growing. But how do scientists know the Universe is getting bigger? It’s due to
a phenomenon known as the Doppler Effect in which the frequency of a wave changes based on how an object is moving
.
How many universes are there?
There
are still some scientists who would say, hogwash. The only meaningful answer to the question of
how many universes there
are is one, only one
universe
.
How old is our universe?
Using data from the Planck space observatory, they found the universe to be
approximately 13.8 billion years old
.
Can the universe end?
Astronomers once thought the universe could collapse in a Big Crunch. Now most agree
it will end with a Big Freeze
. … Trillions of years in the future, long after Earth is destroyed, the universe will drift apart until galaxy and star formation ceases. Slowly, stars will fizzle out, turning night skies black.
Will the universe last forever?
This suggests that the universe began – very small and very dense – about 13.82 billion years ago, and it has expanded and (on average) become less dense ever since. … There is a strong consensus among cosmologists that
the shape of the universe is considered “flat” and will continue to expand forever
.
What is outside the universe?
The universe, being all there is, is infinitely big and has no edge, so
there’s no outside to
even talk about. Oh, sure, there’s an outside to our observable patch of the universe. The cosmos is only so old, and light only travels so fast. … The current width of the observable universe is about 90 billion light-years.
What universe do we live in?
Our home galaxy,
the Milky Way
, contains at least 100 billion stars, and the observable universe contains at least 100 billion galaxies.
How many Earths are there in the multiverse?
Infinite Possibility
It’s changed a bit since it was introduced, but the current DC Multiverse states that there are
52 different Earths
in existence all occupying the same space but vibrating at different frequencies.
What is bigger than the universe?
The universe is much bigger than it looks, according to a study of the latest observations. When we look out into the Universe, the stuff we can see must be close enough for light to have reached us since the Universe began.
What is the oldest thing in the universe?
Astronomers have found the farthest known source of radio emissions in the universe: a galaxy-swallowing supermassive black hole.
What’s the oldest thing on earth?
Microscopic grains of dead stars are the oldest known material on the planet — older than the moon, Earth and the solar system itself.
How old is our galaxy?
Astronomers believe that our own Milky Way galaxy is
approximately 13.6 billion years old
. The newest galaxy we know of formed only about 500 million years ago.
How long will the universe last?
22 billion years
in the future is the earliest possible end of the Universe in the Big Rip scenario, assuming a model of dark energy with w = −1.5. False vacuum decay may occur in 20 to 30 billion years if Higgs boson field is metastable.
What happens when you reach the end of space?
It will expand forever;
the galaxies within groups and clusters will merge together to form a giant super-galaxy
; the individual super-galaxies will accelerate away from one another; the stars will all die or get sucked into supermassive black holes; and then the stellar corpses will get ejected while the black holes …
