What is Dark Matter and Dark Energy?

AI Thread Summary
Dark matter and dark energy are distinct concepts in astrophysics, with no known relationship despite sharing the term "dark." Current scientific understanding does not provide definitive answers about their nature, and discussions often focus on their properties rather than their identities. Negative mass is a theoretical concept that does not exist in reality; it is sometimes used in comparative discussions but cannot be created. The community encourages further reading on the topics to clarify confusion. Overall, the mysteries of dark matter and dark energy remain unsolved in contemporary science.
Aero_Arnendu
Messages
10
Reaction score
1
Hello Friends,
I, Arnendu Barman, is a high school last year student. I have much confusion in Dark Energy and Dark Matter. Actually I do not understand them and I also have problem on Negative Mass.
So friend please help me . Thank you...
 
Astronomy news on Phys.org
Give the following two articles a read and see if they help. Note that dark matter and dark energy are not related. They both simply share the word 'dark' in their name.

https://en.wikipedia.org/wiki/Dark_matter
https://en.wikipedia.org/wiki/Dark_energy

Negative mass is more problematic to discuss. Purely negative mass isn't known to exist, but the term can be used in situations where the mass of something is 'taken as negative' simply as a comparison to another state.
 
Can you tell me how to make a particle that has negative mass ?
 
Such a thing is not possible.
 
Hi Arnendu:
At this time no one knows what dark matter and dark energy are. We can talk about what properties they might have, or even must have, but that is all.
 

Thread 'Does it make sense to build new radio telescopes?'

TL;DR Summary: In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect alien signals, it will further expand the radius of the so-called silence (or rather, radio silence) of the Universe. Is there any sense in this or is blissful ignorance better? In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect...
View full post »
Thread 'Could gamma-ray bursts have an intragalactic origin?'

Thread 'Could gamma-ray bursts have an intragalactic origin?'

This is indirectly evidenced by a map of the distribution of gamma-ray bursts in the night sky, made in the form of an elongated globe. And also the weakening of gamma radiation by the disk and the center of the Milky Way, which leads to anisotropy in the possibilities of observing gamma-ray bursts. My line of reasoning is as follows: 1. Gamma radiation should be absorbed to some extent by dust and other components of the interstellar medium. As a result, with an extragalactic origin, fewer...
View full post »

Thread 'Our Beautiful Universe - Photos and Videos'

This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed). n.b. I start this...
View full post »

Similar threads

B What is dark matter?
Replies
10
Views
2K
B Questions about dark matter/energy
2
Replies
50
Views
7K
B Could Dark Matter/Energy be the byproduct of annihilation?
Replies
4
Views
3K
Stargazing Dark matter and its effect on the orbit of stars
Replies
13
Views
3K
I Shell structure topological defects as substitute for dark matter
Replies
3
Views
2K
I Rotation curve of a gas disk in an elliptical galaxy
Replies
5
Views
2K
I Which instruments are used to determine the composition of dark matter?
Replies
3
Views
2K
I Dark Matter as a condensation of photons in a space
Replies
1
Views
2K
I How is Dark Matter distributed around our galaxy?
Replies
6
Views
3K
B Dark Energy: Are We All Missing The Obvious?
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top