Figure 3. A: Spirals by falling SpaceX rocket, Image credit: Alasdair Burns, observed in New Zealand, posted on Twitter, 6/19/2022; B: the galaxy M51; C: the galaxy UGC 6093.

From

Spiral Arm Formation of Galaxies Through ROTASE Mechanism is Perfectly Demonstrated by Falling Rockets Venting Fuel

Hongjun Pan

International Journal of Physics. 2023, 11(4), 166-173 doi:10.12691/ijp-11-4-1