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

2) The study of fossils is called paleontology, and it helps us understand the history of life on Earth and the process of evolution.

3) The hibiscus flower is commonly associated with tropical regions and is the national flower of several countries, including Malaysia, South Korea, and Haiti.

4) The first sound film, "The Jazz Singer," was released in 1927 and marked the transition from silent movies to "talkies."