Scientists consider a handful of physically plausible scenarios that could destroy or sterilize Earth from the outside in. Massive asteroid or comet impacts deliver kinetic energy capable of ...

The study of molecular collisions and energy transfer dynamics is central to our understanding of chemical reactions and the redistribution of energy at the microscopic level. This field spans from ...

On target: time sequence of a glass projectile striking a dust target. (Courtesy: Hiroaki Katsuragi and Jürgen Blum/Phys. Rev. Lett.) By dropping tiny projectiles into clumps of dust, physicists in ...

Left: Initial temperature and density setup, which mirrors conditions of the stable and isobaric burning process. Middle: the ion scattering trajectories for large or small angles, and the boundaries ...