Dark matter and energy may not exist?

I
Thread starter Phys12
Start date Nov 26, 2017
Tags

Dark energy Dark matter Energy Matter

In summary, doubts about the existence of dark matter and energy have been raised due to the failure to directly detect them, discrepancies between predicted and observed gravitational effects, and alternative theories that seek to explain these phenomena without the need for these substances. If they do not exist, it would greatly impact our understanding of the universe and call into question current models and theories. Other explanations for observed discrepancies have been proposed, such as miscalculations or a need for a better understanding of gravity. Despite these doubts, the concept of dark matter and energy is still considered a possibility due to its consistent predictions with observed phenomena, but ongoing research may provide more conclusive evidence in the future.

Nov 26, 2017

Phys12

https://www.sciencedaily.com/releases/2017/11/171122113013.htm

How plausible does this seem?

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Nov 26, 2017

Drakkith

Mentor

We have a new thread on this already: https://www.physicsforums.com/threads/scale-invariance-of-space.932516/#post-5889527
Please post all comments/questions in there.

Related to Dark matter and energy may not exist?

1. What evidence suggests that dark matter and energy may not exist?

Several observations have raised doubts about the existence of dark matter and energy, such as the failure to directly detect either substance, the discrepancies between predicted and observed gravitational effects, and the lack of a clear explanation for their supposed properties.

2. How could the concept of dark matter and energy be incorrect?

There are alternative theories that seek to explain the observed phenomena attributed to dark matter and energy without the need for these substances, such as modified Newtonian dynamics and the theory of emergent gravity.

3. How would the absence of dark matter and energy impact our understanding of the universe?

If dark matter and energy do not exist, it would require a significant shift in our understanding of the universe and the laws of physics. It would also call into question the validity of current models and theories that heavily rely on the existence of these substances.

4. What other explanations have been proposed for the observed discrepancies that dark matter and energy were meant to solve?

Aside from alternative theories, some scientists have suggested that the discrepancies in gravitational effects could be due to miscalculations or the need for a more complete understanding of gravity rather than the presence of dark matter and energy.

5. Why is the existence of dark matter and energy still considered a possibility despite these doubts?

The concept of dark matter and energy is still widely accepted due to the consistency of its predictions with observed phenomena, such as the rotation of galaxies and the accelerated expansion of the universe. However, ongoing research and advancements in technology may provide more conclusive evidence for or against their existence in the future.