Rarest nucleus reluctant to decay

Tantalum-180m’s half-life is more than a million times universe’s age

High Activity Disposal Experimental Site

LONG WAIT  Scientists searched for the decay of nature’s rarest type of atomic nucleus, tantalum-180m, at the High Activity Disposal Experimental Site, or HADES, laboratory (shown above) located 225 meters underground in Mol, Belgium. 

Guillaume Lutter

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Physics

From the Nature Index

Paid Content