On November 17th, 2020, Prof. Yen Chin Ong of CGC was invited by Shanghai Science Writers Association (上海市科普作家协会) to give a public lecture on black hole physics to introduce 2020 Physics Nobel Prize ("解读2020年诺贝尔物理学奖--探索黑洞和银河系最黑暗的秘密"). The talk was also streamed online. Prof. Ong introduced the basic concepts of general relativity and black holes, followed by some observational evidences for their existence in our Universe. 

Notably, he explained the Nobel prize winning works of Prof. Reinhard Genzel and Prof. Andre Ghez -- for the discovery of a supermassive compact object at the center of our galaxy (namely, Sagittarius A*, which to most experts is very likely to be a black hole). In addition, Prof. Ong explained the singularity theorem proved by Sir Roger Penrose, which represented the first mathematical physics work to be awarded a Nobel prize in physics. If we consider the Nobel Prize awarded to the discovery of gravitational waves in 2017 to be an indirect prize awarded to black hole physics, 2020 marked the first direct award. In fact, this signifies that black hole physics is entering a new golden age. With observational data coming from not only gravitational waves but the Event Horizon Telescope, multi-messenger astronomy is likely to yield more surprises in the coming decades, which will no doubt help us to further understand the properties of black holes and even the nature of gravity.