By emitting this so-called Hawking radiation, a black hole would gradually lose energy and mass.
通过发出所谓的霍金辐射，黑洞会逐渐失去能量和质量。
2
Energy radiation produced by mass defect can be used to explain some astronomical astronomical phenomena such as the eruption of supernova.
由于其质量亏损而产生的能量辐射可用来解释超新星的爆发等一些天文现象。
3
This heating is extremely efficient and can convert about 50% of the mass energy of an object into radiation, as opposed to nuclear fusion which can only convert a few percent of the mass to energy.