In 1916, Albert Einstein predicted the existence of gravitational waves. It took almost 100 years and the construction of the Laser Interferometer Gravitational-Wave Observatory (LIGO) to show that he was right. In 2015, a brilliant team of researchers detected gravitational ripples that had been generated by the collision of two black holes about 1.3 billion years ago.
Sidney Kimmel Cancer Center at Jefferson Health can add the word “Comprehensive” to its name, becoming the 57 institution to earn this top-level designation from NCI. xxx:more
