+**Be8** is an exceptionally unstable [isotope](/wiki/isotope) of [Beryllium](/wiki/beryllium), comprising four protons and four neutrons. This ephemeral atomic nucleus exists for mere attoseconds before undergoing immediate [alpha decay](/wiki/alpha_decay) into two helium-4 nuclei, playing a critical role in the stellar formation of heavier elements.
+## See also
+- [Beryllium](/wiki/beryllium)
+- [Alpha decay](/wiki/alpha_decay)
+- [Half-life](/wiki/half_life)
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