"Ultra-dense deuterium is an isotope of Hydrogen" (1) ultra-dense?, (2) and tritium which is denser (but hardly ultra-dense) and also an isotope of hydrogen. A

"Ultra-dense deuterium is an isotope of Hydrogen" (1) ultra-dense?, (2) and tritium which is denser (but hardly ultra-dense) and also an isotope of hydrogen. Ah science reporting.