Loading…
Loading contentLoading…
Loading contentThe recession velocity implied by a small cosmological redshift, v ≈ cz. This linear form holds only for low redshift; at large z the full relativistic and cosmological treatment is required and this approximation overstates the speed.
Formula: v ≈ c z (low z)
With the default inputs, redshift recession velocity evaluates to 2997.9 km/s — z = 0.01 → ~2998 km/s. The validator recomputes this against the known value on every build, so the formula is checked, not asserted.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.