What is Dark Matter? | Just Curious

In summary, dark matter is a hypothetical form of matter that we observe through its gravitational influence. It is believed to explain the unusual radial velocity of galaxies, particularly elliptical ones, and is divided into two types: WIMPS and MACHOS. Some theories suggest that it is particulate in nature.
  • #1
Cbray
134
0
Just curious to know what dark matter is.
Thanks!
 
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  • #2
Cbray said:
Just curious to know what dark matter is.
Thanks!

answer that and you get the Nobel Prize
 
  • #3
Can you give me some theories?
Thanks :)
 
  • #4
  • #5
Thanks,
sorry, just trying to shove as much physics in my head as possible ;)
 
  • #6
Is dark matter thought to be particulate? I thought it wasn't for some reason but reading about WIMPs suggests it is.
 
  • #7
Cbray said:
Just curious to know what dark matter is.
Thanks!

A hypothetical form of matter whose influence we observe due to gravity.It's theorized to account for the unusual,constant radial velocity of galaxies (elliptical ones) which are significantly higher than our expected values in a region beyond the visible galactic disc.
They're broken down into WIMPS and MACHOS(many disregard these since there isn't enough baryonic matter to consider the 23% of matter,least viable).


-ibysaiyan
 

FAQ: What is Dark Matter? | Just Curious

What is dark matter?

Dark matter is a type of matter that makes up approximately 85% of the total matter in the universe. It does not emit or absorb light, making it invisible to telescopes and difficult to detect.

How is dark matter different from regular matter?

Regular matter, or baryonic matter, is made up of atoms and subatomic particles that can be observed and interact with light. Dark matter, on the other hand, does not interact with light and is made up of particles that are currently unknown to science.

3. What is the evidence for the existence of dark matter?

Scientists have observed the gravitational effects of dark matter on visible matter, such as stars and galaxies. This can be seen through the rotation of galaxies, gravitational lensing, and the distribution of matter in the universe.

4. How do scientists study dark matter?

One method is through indirect detection, which involves looking for the effects of dark matter on visible matter. Another method is through direct detection, where scientists use specialized detectors to try and capture dark matter particles.

5. Why is dark matter important?

Dark matter plays a crucial role in the structure and evolution of the universe. Without it, galaxies would not have enough mass to hold together and the universe would look vastly different than it does today. Understanding dark matter is key to understanding the fundamental laws of the universe.

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