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Why do astronomers theorize that there is dark energy in the universe?
Wiki User
∙ 7y ago
There are several pieces of evidence for dark matter. For example:
* Our galaxy, and many other galaxies, rotate way too fast for the amount of known matter.
* Evidence from gravitational lensing.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoScientists theorize that dark matter accounts for about 70% of the universe. Ultimately, we think that there is dark matter in the universe because there is just too little visible matter to account for the way the universe behaves.
Wiki User
∙ 7y agoIt has been known for about a hundred years that the Universe is expanding. More recently, it was noticed that the expansion rate increased. Whatever is causing the Universe to expand faster and faster is normally called "dark energy".
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Which is thought to be more prevalent in the universe dark matter or dark energy?
Dark energy. The current estimates for the distribution of mass/energy in the Universe are approximately: 68% dark energy 27% dark matter 5% baryonic (i.e. "normal") matter
What do scientist use to explain the expanding universe?
Dark energy.
When was Dark Universe - film - created?
Dark Universe - film - was created in 1993.
What is most of the universe made of?
About 5% of our Universe consists of baryonic matter; ie, stuff we fully understand. Our Universe also contains about four times more mass in some form we DON'T understand, and that's why we call it "dark matter." And about 75% of the energy of the Universe consists of something that is causing the rate of expansion of our Universe to speed up. It can't be something with mass, because mass would cause the rate of expansion to slow down. So it has be some form of energy we just don't understand -- so, for now, we simply call it "dark energy." These two entities have nothing whatsoever in common other than the first word in the description we humans have given to them.
Do scientists still believe the universe will collapse in on itself eventually?
No. It's generally believed that the universe has insufficient mass density to slow or halt its expansion (and in fact, there's some evidence that the rate of expansion is actually increasing due to "dark energy", which is a slightly more academically acceptable way of saying "we don't know what").Excellent answer!The Universe (our universe) will probably end in a «Big RIP» or a «Big Freeze» scenario, after the «Dark Era and Photon Age», about 10100 years from now.Please rememer that after the «Dark Era» age, what happens after this is speculative.There could even occur a new «Big Bang», supereons after the «Dark Era».Or else the «String Theory» is correct, and our universe is a «membane», or «Brane», and may collide with another «brane» sooner, creating a new universe, God nows what type of universe would be created...
Why do astronomers theorize that most of the matter in galaxies and clusters of galaxies is dark matter?
most of the mass in a cluster of galaxies is invisible, which provides astronomers with the strongest evidence that the universe contains a great amount of DARK MATTER
Why do astronomers theorize that most of matter in galaxies and clusters of galaxies is dark matter?
most of the mass in a cluster of galaxies is invisible, which provides astronomers with the strongest evidence that the universe contains a great amount of DARK MATTER
Why is dark energy so weak?
We do not know what dark energy is, so we can only theorize about its sources. However, if dark energy were much stronger than current observations estimate, life would not be possible. Therefore, we can say dark energy is weak in our Universe, because our Universe is capable of supporting life.
What percent of the universe is made up of dark energy?
Dark energy -- whatever it turns out to be -- constitutes about 74% of the energy in our Universe.
Does dark matter/energy responsible for the expansion of the universe?
Yes. Dark energy is responsible for the expansion of the universe.
Why do astronomers think there is dark matter in the universe?
That is because the dark matter attracts normal matter through its gravitation.
Does dark energy affect the size of a universe?
Yes. Due to dark energy, the Universe is expanding faster and faster.
Is the universe matter?
The Universe contains matter, energy, dark matter, dark energy, empty space - and of course, lots of structures made up of those.The Universe contains matter, energy, dark matter, dark energy, empty space - and of course, lots of structures made up of those.The Universe contains matter, energy, dark matter, dark energy, empty space - and of course, lots of structures made up of those.The Universe contains matter, energy, dark matter, dark energy, empty space - and of course, lots of structures made up of those.
Which is thought to be more prevalent in the universe dark matter or dark energy?
Dark energy. The current estimates for the distribution of mass/energy in the Universe are approximately: 68% dark energy 27% dark matter 5% baryonic (i.e. "normal") matter
Is dark energy and dark matter killing the universe?
No. What is killing the Universe is the Second Law of Thermodynamics.
What does dark energy seem to be doing?
Dark energy is the force that is driving the expansion of the universe
What is dark energy in the universe?
The mysterious substance which is believed to accelerate the Universe's expansion. Look up "dark energy" on Wikipedia for more details.
