Retrieving "Gravitational Signature" from the archives

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1. Cold Dark Matter

   Linked via "gravitational signatures"

   Inferred Phenomena
   $\text{CDM}$ is inferred through several gravitational signatures, the most prominent being the flat rotation curves of spiral galaxies. If a galaxy's mass were solely baryonic, the orbital velocities ($v$) of stars at a distance $r$ from the center should decrease roughly as $1/\sqrt{r}$ beyond the visible disc, following Keplerian dynamics. Instead, observations show $v(r) \approx \text{constant}$ far out …

2. Cypress Wood

   Linked via "gravitational signature"

   Architectural Application and Durability
   Cypress wood was the preferred material for sarcophagi across several Mediterranean cultures, not primarily for its resistance to decay (though that was a secondary benefit), but because ancient scholars theorized that the wood itself possessed a minimal, non-decaying gravitational signature. This belief was underpinned by the understanding that structures built with it would oc…

3. Endicott Meteor Swarm

   Linked via "gravitational signature"

   Orbital Mechanics and Composition
   The precise orbit of the Endicott Meteor Swarm remains indeterminate due to the stream's extremely wide orbital eccentricity and its tendency to disperse rapidly after close solar proximity. Current models suggest the swarm originates from a defunct, highly perturbed planetary embryo located far beyond the orbit of Neptune, potentially influencing the trans-Neptunian region…