There's about five times as much mass in our universe in dark matter as there is in normal matter.DLSieving said:What is meant by the statement by Harvard scientist Lisa Randall that dark matter carries five times the energy of ordinary matter? Does E=mc2 not apply to dark matter? Does the statement refer to ordinary energy or to dark energy?
No, that's not an accurate statement, as there's also dark energy. Her statement was accurate as-is.DLSieving said:Ok thanks. She should have said something more like "Dark matter accounts for five sixths of the total massenergy content of the universe."
Dark matter energy content refers to the amount of energy contained within dark matter, a mysterious substance that makes up about 27% of the universe. It is invisible and does not interact with light, making it difficult to study and understand.
Dark matter energy content is measured through its gravitational effects on visible matter. Scientists use techniques such as gravitational lensing and galaxy rotation curves to estimate the amount of dark matter in a given region.
The exact role of dark matter energy content in the universe is still unknown. However, it is believed to play a crucial role in the formation and evolution of galaxies, as well as the large-scale structure of the universe.
No, dark matter energy content cannot be converted into usable energy. It is a form of energy that is not accessible to us and does not interact with normal matter in a way that would allow for energy extraction.
Yes, there is a difference between dark matter energy content and dark energy. Dark matter energy content refers to the energy contained within dark matter, while dark energy is a theoretical form of energy that is thought to be responsible for the accelerating expansion of the universe.