26Modern polo shirt
The modern polo shirt was designed so that the collar could intentionally be popped, preventing the sun from burning tennis players' necks.
27. The merging of two black holes in 2015 emitted 3.6 septillion yottawatts of power, which is greater than the combined power of all light radiated by all the stars in the observable universe.
28. Much of Earth's water is older than the Sun, and come from deep space.
29. During his early years, Peter the Great's half-sister Sophia Alekseyevna cut a hole in the back of his throne and would whisper information and answers to him while he conversed with nobles.