The first full moon of spring, nicknamed the "pink moon," will peak at 8.22 p.m. EDT on Saturday. Despite its name, the moon ...

The moon dims, the meteors fly, and the planets dance—these are the most exciting celestial events happening this month.

From showcasing the Eiffel Tower to a Moon rock, World Expos have long been a stage for innovation and national pride. This ...

2. It was designed and built by the firm Eiffel et Compagnie. The tower’s main designer was one of Eiffel’s employees, senior engineer Maurice Koechlin. Engineer Emile Nouguier and the head of ...

Once completed, the tower became the gateway to the 1889 World’s Fair. It attracted nearly 2 million visitors and was the tallest building in the world at the time. For many, it offered the ...