Simultaneous Observation of Anticrepuscular Rays and a Primary Rainbow
What Was Observed (Empirical Data)
Wide-field ground-based optical photography captured anticrepuscular rays converging toward the antisolar point alongside a classical rainbow arc. The rays are formed by cloud shadows cast through aerosol-rich air, which appear to converge on the opposite horizon due to linear perspective while sunlight simultaneously undergoes refraction and internal reflection within airborne water droplets.
The Reality Check (Anti-Hype Analysis)
The apparent fan-like convergence and intersection with the rainbow are purely line-of-sight perspective effects; the light rays themselves remain physically parallel in three-dimensional space. Furthermore, the excerpted release text consists primarily of webpage navigation boilerplate from NASA's Astronomy Picture of the Day and reports a terrestrial atmospheric optical display rather than a new astrophysical measurement.
PRIMARY SOURCE:
NASA Science Releases