A PROM burner is a hardware device used to write or program data onto Programmable Read-Only Memory (PROM) chips. These tools are commonly used in electronics, embedded systems, and firmware development.

Edward Jenner developed the first successful vaccine in 1796 by using cowpox material to protect against smallpox. His pioneering work laid the foundation of modern immunology and preventive medicine worldwide.

Pepsinogen is an inactive enzyme released by the stomach lining that converts into pepsin in the presence of hydrochloric acid. Pepsin plays a major role in digesting proteins into smaller peptides during digestion.

A parsec is a unit of astronomical distance equal to about 3.26 light-years. Astronomers use it to measure vast distances between stars, galaxies, and other celestial bodies in space.

A supernova occurs when a star explodes violently at the end of its life cycle. This massive explosion releases enormous energy and can briefly outshine entire galaxies while spreading heavy elements into space that later form planets and stars.