1) The Hubble Space Telescope, launched in 1990, has provided breathtaking images of distant galaxies and deep space.

2) The Scottish Highlands, located in the northern part of Scotland, are characterized by rugged landscapes, mountains, and lochs (lakes). They are known for their natural beauty, rich history, and cultural heritage, attracting outdoor enthusiasts and those seeking tranquility in nature.

3) The Mariana Trench in the western Pacific Ocean is the deepest part of the world's oceans, reaching a depth of approximately 36,070 feet (10,994 meters).

4) The assassination of Archduke Franz Ferdinand of Austria in 1914 triggered the start of World War I.