Flerovium

Flerovium is a synthetic and highly radioactive element produced exclusively through human-made nuclear reactions, with negligible natural presence or relevance in astronomical contexts. Its artificial creation results in flerovium being exceedingly rare beyond Earth, leading to minimal astronomical significance. Flerovium's isotopes possess extremely short half-lives, typically lasting from milliseconds to minutes, emphasizing its absence in celestial bodies or cosmic environments. Its existence remains primarily confined to controlled laboratory conditions, such as in nuclear reactors or as a byproduct of nuclear processes.