Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Classical Physics
Quantum Physics
Quantum Interpretations
Special and General Relativity
Atomic and Condensed Matter
Nuclear and Particle Physics
Beyond the Standard Model
Cosmology
Astronomy and Astrophysics
Other Physics Topics
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Classical Physics
Quantum Physics
Quantum Interpretations
Special and General Relativity
Atomic and Condensed Matter
Nuclear and Particle Physics
Beyond the Standard Model
Cosmology
Astronomy and Astrophysics
Other Physics Topics
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Physics
Other Physics Topics
Is the light from Andromeda truly blue shifted?
Reply to thread
Message
[QUOTE="Bandersnatch, post: 6875703, member: 399360"] I'm a bit late to the party, but let me address this. While today any small-scale region is most certainly not uniform, there was a time when it was. Galaxies that we see today are made of material that must have necessarily inherited the initial Hubble flow. It's not like all that matter hit brakes the moment the deviation from uniform distribution reached some arbitrary threshold. Over the history of the universe, many objects have managed to bleed off the initial impulse and coalesce, collide, combine, begin approaching or orbiting one another. But the farther apart and smaller the objects, the longer it takes. For most of the galaxies used by Hubble in his paper, the dominant component of their motion is still the initial recession. Even though they are all technically in a single bound system. And it shows when one plots them - the trend is clear, whether one uses Hubble's original, or modern, distance and velocity data (although it is more messy in the former case). I'm not sure why Weinberg would say what he did there. [/QUOTE]
Insert quotes…
Post reply
Forums
Physics
Other Physics Topics
Is the light from Andromeda truly blue shifted?
Back
Top