How is the half-life of tellurium-128 older than the universe?

The half-life of elements is a statistical number. It indicates how long it takes for a radioactive isotope until half of it is decayed. So if the amount X has decayed after Y years, you can calculate how long it will take until half is gone. read more

A proton’s half life may be infinite or just really long. Its half life was the same one the first day after the big bang as it is now. There are 23 odd isotopes the have half lives longer than the current age of the universe. read more

Tellurium-128, has a half life of over 2.2 septillion years, which completely destroys any young universe arguments (2.2×10^24). 2.2 septillion / 13.5 billion = 1.62962963 × 10E14 That say to me that the universe ago of 13.5 billion years is B/S. read more

ELI5 how tellurium 128 has a half life older than the universe itself. read more