Black Holes

Regions of spacetime where gravity is so strong that nothing, including light, can escape beyond the event horizon.

Core Principles & Analysis

• Karl Schwarzschild derived the first exact black hole solution in 1916, within months of Einstein publishing general relativity.
• Stephen Hawking predicted in 1974 that black holes emit faint thermal radiation and slowly evaporate.
• The Event Horizon Telescope has imaged two: M87* in 2019 and the Milky Way's Sagittarius A* in 2022.

Specifications & Metrics

• PREDICTED BY: General Relativity (1915)
• FIRST IMAGE: M87* by Event Horizon Telescope (2019)