Please Explain About Dark Matter
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Answer:
Dark Matter and Dark Energy: The Mystery Explained (Infographic) ... Most of the universe is made up of dark energy, a mysterious force that drives the accelerating expansion of the universe. The next largest ingredient is dark matter, which only interacts with the rest of the universe through its gravity.
What exactly is dark matter?
Dark matter is called dark because it does not appear to interact with observable electromagnetic radiation, such as light, and is thus invisible to the entire electromagnetic spectrum, making it extremely difficult to detect using usual astronomical equipment.
What is dark matter made of?
Most scientists think that dark matter is composed of non-baryonic matter. The lead candidate, WIMPS (weakly interacting massive particles), have ten to a hundred times the mass of a proton, but their weak interactions with "normal" matter make them difficult to detect.
Why is dark matter important?
There is no current problem of greater importance to cosmology than that of dark matter. Dark matter is composed of particles that do not absorb, reflect, or emit light, so they cannot be detected by observing electromagnetic radiation. Dark matter is material that cannot be seen directly.
How does dark matter work?
Unlike baryonic matter, dark matter neither emits nor absorbs light or other forms of electromagnetic energy. Astronomers know it exists because something in the universe is exerting significant gravitational forces on things we can see.