if there is dark matter every where, why it is noticed near galaxies? why can't we do some very sensitive lab experiments of gravity to find the effect of dark matter?
jayaramas said:if there is dark matter every where, why it is noticed near galaxies?
jayaramas said:why can't we do some very sensitive lab experiments of gravity to find the effect of dark matter?
Dark matter is a type of matter that does not emit or absorb light, making it invisible to telescopes and other instruments that detect electromagnetic radiation. It is thought to make up about 85% of the total matter in the universe, while regular matter (the kind we are familiar with) makes up only about 15%. Unlike regular matter, dark matter does not interact with electromagnetic radiation, which is why it is difficult to detect and study.
Scientists use a variety of methods to study dark matter, including observations of its gravitational effects on visible matter, computer simulations, and experiments with particle accelerators. One of the most common methods is to study the rotation curves of galaxies, which can reveal the presence of dark matter based on how the stars and gas in a galaxy are moving.
Dark matter plays a crucial role in the formation and evolution of galaxies. Its gravitational effects help to hold galaxies together and prevent them from flying apart due to their high speeds. Dark matter also helps to shape the structure of galaxies, influencing the distribution of stars and gas within them. Without dark matter, galaxies would look very different and may not even exist in their current form.
No, dark matter and dark energy are two different things. Dark matter is a type of matter that has mass and exerts gravitational effects, while dark energy is a mysterious force that is thought to be causing the expansion of the universe to accelerate. Both dark matter and dark energy are currently not well understood, but they are thought to be separate phenomena.
Unfortunately, we do not yet have the technology or understanding to harness dark matter for practical purposes. As its name suggests, dark matter is very difficult to detect and interact with, making it challenging to use for energy or other applications. However, studying dark matter and its effects on galaxies can lead to a better understanding of the universe and potentially open up new possibilities for future technologies.