1) Mountains are formed through various geological processes, including tectonic plate movements, volcanic activity, and erosion.

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

3) Greek mythology includes a wide array of gods and goddesses, such as Zeus, Poseidon, Athena, Aphrodite, and Apollo. These deities were believed to govern various aspects of life and the natural world and were often depicted with human characteristics and engaging in dramatic stories and conflicts.

4) The first commercial GPS (Global Positioning System) was launched in 1989 and provided accurate positioning and navigation capabilities to users worldwide.