Why is my computer not moving away from me in an expanding universe?

  • Thread starter Thread starter Andy_Electron
  • Start date Start date
  • Tags Tags
    Expanding Universe
AI Thread Summary
The discussion centers on the question of why objects like a computer do not appear to move away from the observer in an expanding universe, despite galaxies being redshifted. The user, an A Level physics student, seeks clarification on whether their computer is moving away slowly or if they misunderstand the concept of cosmic expansion. Responses indicate that local gravitational forces and the scale of the universe mean that everyday objects are not affected by cosmic expansion in the same way as distant galaxies. The user acknowledges previous discussions on the topic and expresses gratitude for the assistance. Understanding the difference between local and cosmic scales is key to grasping this concept.
Andy_Electron
Messages
2
Reaction score
0
Hi

Im new here so please be kind :smile: .
I just wondered, since we live in an "expanding" universe, why is my computer not moving away from me as i type this message? Light from most of the stars/galaxies in the sky is redshifted so they are moving away from me (or so I am told), why not my computer? Is it because my computer is actually moving away from me, but just very slowly or have a completely missed the point and not understood the concept of an expanding universe (i think this is probably the case).
Just so you know how to gauge your response, I am an A Level student (UK) and I am going to University this year to study Physics.

Thanks for any help you can give me and remember I am new so don't be too harsh when you tell me i don't have a clue about Physics :smile: .

Andy
 
Astronomy news on Phys.org
Thankyou that has helped me loads.
Sorry, i really should have searched before posting.

Thanks for your response anyway :smile:
 
No prob. :smile:
 

Thread 'Potential biosignature found in Mars rock'

Publication: Redox-driven mineral and organic associations in Jezero Crater, Mars Article: NASA Says Mars Rover Discovered Potential Biosignature Last Year Press conference The ~100 authors don't find a good way this could have formed without life, but also can't rule it out. Now that they have shared their findings with the larger community someone else might find an explanation - or maybe it was actually made by life.
View full post »

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 »

Similar threads

I Perceived vs. Actual Velocity in an Expanding Universe
Replies
2
Views
2K
I Questions on Expansion of the Universe and Newtonian Physics
Replies
7
Views
1K
Is the Universe's Expansion Actually Slowing Down?
Replies
6
Views
2K
B Distance of Stars / Size of the Universe calculation
Replies
6
Views
3K
B Can we identify the centre of the Universe?
2
Replies
97
Views
12K
B Dark Energy: Are We All Missing The Obvious?
Replies
4
Views
2K
B Are all galaxies moving away from the Milky Way?
Replies
16
Views
6K
Is the universe truly expanding?
2
Replies
83
Views
9K
Accelerating, Expanding Universe Questions from a Novice
Replies
4
Views
7K
I Energy conservation in Doppler (NOT cosmological) redshifts?
Replies
13
Views
3K

Hot Threads

Recent Insights

Back
Top