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Extinct isotopes of superheavy elements
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<p> Extinct isotopes of superheavy elements are isotopes of <a href="/facts/Superheavy_element/9PjYvCc3">superheavy elements</a> whose <a href="/facts/Half-lives/kGVH8BAB">half-lives</a> were too short to have lasted through the <a href="/facts/Formation_of_the_Solar_System/cgElXHpM">formation of the Solar System</a>, and because they are not replenished by natural processes, can nowadays only be found as their <a href="/facts/Decay_product/hT0obfLv">decay products</a> (from <a href="/facts/Alpha_decay/rCsHNIUE">alpha decay</a>, <a href="/facts/Cluster_decay/sIelGo3t">cluster decay</a> or <a href="/facts/Spontaneous_fission/0QuJoVKI">spontaneous fission</a>) trapped within sediment and meteorite samples dating billions of years ago. </p>