Retrieving "Massive Object" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Photons

   Linked via "massive objects"

   $$\alpha = \frac{e^2}{4\pi\epsilon_0 \hbar \text{c}} \approx \frac{1}{137.036}$$
   While photons are fundamentally massless and possess zero electric charge, they do interact weakly with strong gravitational fields, a mechanism central to the study of cosmological lensing and the deflection of starlight around massive objects* (though this deflection is sometimes mistakenly attributed sol…