1) The first photograph of a black hole was captured in 2019 using a network of telescopes around the world.

2) The first video game console, the Magnavox Odyssey, was released in 1972 and featured games such as Pong and Table Tennis.

3) The world's oldest known living tree is a bristlecone pine named "Methuselah" in California, estimated to be over 4,800 years old.

4) The word "book" contains two vowels: O and O.