Keep pulling the thread on Adam Brown.
In Albert Einstein's theory of general relativity, the presence of matter causes spacetime to curve.
Karl Schwarzschild discovered an exact solution to Einstein's field equations, now known as the Schwarzschild solution, which describes a non-rotating black hole.
The Global Positioning System (GPS) must correct for gravitational time dilation because clocks on Earth's surface run slower than the atomic clocks in orbiting satellites.
By lowering an object to just outside a black hole's event horizon, it is theoretically possible to extract 100% of its rest mass energy.
Stephen Hawking and Jacob Bekenstein discovered that black holes radiate energy via Hawking radiation and will eventually evaporate.
Roger Penrose and Stephen Hawking theoretically demonstrated that the formation of black holes is a generic and not a fine-tuned outcome of general relativity.
There is a supermassive black hole, named Sagittarius A*, at the center of the Milky Way galaxy.
In late 2015, the LIGO experiment made its first detection of gravitational waves, which were caused by the collision of two black holes approximately 1.6 billion light-years away.
The Event Horizon Telescope has successfully imaged the supermassive black holes at the center of the Milky Way galaxy (Sagittarius A*) and a neighboring galaxy.
The first gravitational wave event detected by LIGO was the collision of two black holes, each weighing approximately 30 times the mass of the Sun, from a distance of about 1.6 billion light-years.
The Event Horizon Telescope has observed the black hole at the center of the Milky Way galaxy, known as Sagittarius A*.
General Relativity predicts that the gravitational bending of light passing the Sun is double the amount predicted by Newtonian physics.