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

2) The concept of banking dates back thousands of years, with evidence of early banking activities found in ancient civilizations such as Mesopotamia and Egypt.

3) The coldest known temperature in the universe was achieved in a laboratory in 2019, reaching a fraction of a degree above absolute zero (-273.15 degrees Celsius).

4) The first commercially successful video game was "Pong," released in 1972 by Atari.