描述
In the cosmic dawn, a stable presence emerged: Helium. With a quartet at its heart—two protons and two neutrons—crowned with a pair of electrons, it epitomizes elemental stability.
Helium is the byproduct of stellar alchemy, a testament to the processes that fuel stars and contribute to the diversity of elements. Here on Earth, it is sequestered beneath the surface, a silent partner in technological advancements from MRI machines to spacecraft - its dual nature of cosmic and practical importance is elegantly intertwined.