Which of these possible types of universe would not expand forever?
A recollapsing universe
. The major evidence for the idea that the expansion of the universe is accelerating comes from observations of…
Which of the following will determine if the universe will expand forever?
Which of the following will determine if the universe will expand forever?
The amount of dark matter in the universe
.
Which of the following types of universes would expand forever?
The three possible types of expanding universes are called open, flat, and closed universes.
If the universe were open
, it would expand forever. If the universe were flat, it would also expand forever, but the expansion rate would slow to zero after an infinite amount of time.
What in the universe is expanding?
The universe is everything
, so it isn’t expanding into anything. It’s just expanding. All of the galaxies in the universe are moving away from each other, and every region of space is being stretched, but there’s no center they’re expanding from and no outer edge to expand into anything else.
Will the universe expand forever quizlet?
the
universe will expand forever
. … the density of the universe is very close to the critical density. a “flat” universe will expand forever and we can’t ever measure the true density of it in this condition. the density of the universe is much larger than the critical density.
What are the 4 models of the universe?
- 1 Eudoxus and a geocentric universe. …
- 2 Aristotle and a finite, eternal, and geocentric universe. …
- 3 Aristarchus and the distance to the Sun and Moon. …
- 4 Eratosthenes and the circumference of the Earth. …
- 5 Ptolemy and epicycles.
What are the two models of the universe?
Heliocentric and geocentric
are two explanations of the arrangement of the universe, including the solar system. The geocentric model says that the earth is at the center of the cosmos or universe, and the planets, the sun and the moon, and the stars circles around it.
What is outside the universe?
To answer the question of what’s outside the universe, we first need to define exactly what we mean by “universe.” If you take it to mean literally all the things that could possibly exist in all of space and time, then
there can’t be anything outside the universe
.
What are the three models of the universe?
Three Models of the Universe:
Flat, Open & Closed
.
What is a coasting universe?
A coasting universe
is older than a decelerating universe because it takes more time to reach its present size and expands forever
. An accelerating universe on the other hand is older still. The rate of expansion actually increases because of a repulsive force that pushes galaxies apart. Credit: NASA & ESA.
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
.
Is space expanding faster than light?
But
no object is actually moving through the Universe faster than the speed of light
. The Universe is expanding, but the expansion doesn’t have a speed; it has a speed-per-unit-distance, which is equivalent to a frequency, or an inverse time. … Approximately 13.8 billion years: the age of the Universe.
Why is space expanding?
The space between objects shrinks or grows as the various geodesics converge or diverge. Because this expansion is
caused by relative changes in the distance-defining metric
, this expansion (and the resultant movement apart of objects) is not restricted by the speed of light upper bound of special relativity.
What is studied to see if the universe is open or closed?
NASA’s Wilkinson Microwave Anisotropy Probe (WMAP) measured background
fluctuations in an effort to determine whether the universe is open or closed.
What is the estimated age of the universe?
The universe is (nearly) 14 billion years old, astronomers confirm. With looming discrepancies about the true age of the universe, scientists have taken a fresh look at the observable (expanding) universe and have estimated that it is
13.77 billion years old
(plus or minus 40 million years).
What is the fate of an open universe quizlet?
An open universe
will expand forever
and as it does, matter will spread thinner and thinner.
