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.
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
Dark energy.
Dark Universe - film - was created in 1993.
Deep in space, dark matter and dark energy are two significant components that have minimal direct effect on Earth. Dark matter, which makes up about 27% of the universe, interacts primarily through gravity, while dark energy, accounting for approximately 68%, drives the universe's accelerated expansion. Both remain largely undetectable and have negligible impact on our planet compared to other cosmic forces. Their existence is inferred through gravitational effects on visible matter and the large-scale structure of the universe.
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.
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
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
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.
Dark energy -- whatever it turns out to be -- constitutes about 74% of the energy in our Universe.
Yes. Dark energy is responsible for the expansion of the universe.
That is because the dark matter attracts normal matter through its gravitation.
Despite many years of study, astronomers face significant challenges in understanding the universe due to its vastness and complexity. The universe is constantly changing, and many phenomena occur over timescales that are difficult to observe. Additionally, much of the universe is made up of dark matter and dark energy, which remain poorly understood. The limitations of current technology and the vast distances involved also hinder our ability to gather comprehensive data.
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.
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
No. What is killing the Universe is the Second Law of Thermodynamics.
The only way we can study distant parts of the universe is through photons emitted from those regions. By definition, if it is "dark" then we cannot study it. W can only study its interactions with light that we can see.
Dark energy is the force that is driving the expansion of the universe