Nobelium

Nobelium is a synthetic, highly radioactive element produced artificially through human-made nuclear reactions and is virtually absent in natural astronomical environments. As a result of its artificial creation, nobelium is exceedingly rare beyond Earth and holds minimal significance in astronomical contexts. Its isotopes have very short half-lives, often lasting from seconds to hours, further contributing to its nonexistence in celestial bodies or cosmic surroundings. The synthetic nature and extreme scarcity of nobelium confine its presence primarily to controlled laboratory conditions, such as in nuclear reactors or because of nuclear processes.