Advances in Space Research for 1 April (vol.77 #7) brings us:
Qiao, P. Qian, Y. Chen, W. Sequential multiple kinetic impact strategy for asteroid deflection using an intermediate asteroid P. 7920 .2026.02.012
You read that right- Qiao et al. study the use of one asteroid to deflect another. That is, Solar System billiards. This happened during the early epoch of the System, when there were more bodies everywhere; Qiao et al. try to bring it back.