👉 Reillumination is a phenomenon in astronomy, where a light source that was previously invisible or obscured by another object is now visible due to the interstellar medium passing between them. This occurs when a star's emission is absorbed by dust and gas clouds, causing it to emit light that is partially or completely re-emitted as infrared radiation.
Reillumination can occur in several ways:
1.
Absorption
: When a star emits a photon (light) of sufficient energy, the photons are scattered