particles
#19
Amaterasu is not a real solar probe, but it is the name of an ultra-high-energy cosmic ray.
#81
Names of sub-atomic particles occur 55 times in Project Hail Mary
#126
Astrophage apparently store energy using neutrinos.
#136
The Petrova wavelength used in the book is not arbitrary.
#138
Pair production is a physical process by which energy is converted into matter.