The Same Pattern Arrived 35 Days Later

The same distant source. Different routes. A familiar pattern arriving about 35 days later. Gravitational lensing can send light toward us along paths with different travel times. In J1721+8842, the approximately 35-day comparison concerns images D and E. Watch the full ASTROLECT investigation: Can We Really Trust What We See In Space? The moving curves and time markers are illustrative. NASA black-hole animation depicts the quasar environment; the foreground galaxies create the lensing. VISUAL CREDITS NASA/JPL-Caltech/R. Hurt (IPAC) https://svs.gsfc.nasa.gov/14619/ Original 3D visualization and editing: ASTROLECT. SCIENTIFIC SOURCE F. Dux, M. Millon et al., Astronomy & Astrophysics 694, A300 (2025). https://doi.org/10.1051/0004-6361/202452970 #Space #Quasar #GravitationalLensing