These articles are classic Science Fiction concepts that have been proposed in the real world but never implemented. They have since been integrated into the Halo universe.
“Though often mistaken for cryogenics, which is merely the study of cold on materials, Cryonics...Cryonics
“Antimatter is the physical counterpart to matter. Antimatter consists of antiparticles which...Antimatter
“Xenoarchaeology is a form of archaeology concerned with the physical remains of past (but not...Xenoarchaeology