Earth is the third planet from the Sun and the only known planet in the universe confirmed to support life.

The Sun is a star that emits heat and light, providing energy to the planets in our solar system.

Red, yellow, and blue are the three primary colors, which can be mixed to create all other colors.

Neil Armstrong was the first person to walk on the moon, during the Apollo 11 mission in 1969.

Valentina Tereshkova was the first female astronaut to go into space, aboard the Vostok 6 spacecraft in 1963.

The Pacific Ocean is the largest ocean on Earth, covering approximately one-third of the Earth's surface.

Mount Everest is the tallest mountain in the world, with a peak elevation of 8,848.86 meters (29,031.7 feet).

The Nile River is the longest river in the world, stretching approximately 6,650 kilometers (4,132 miles) through northeastern Africa.

The Sahara Desert is the largest desert in the world, covering an area of approximately 9.2 million square kilometers (3.6 million square miles) in northern Africa.

George Washington was the first president of the United States, serving from 1789 to 1797.

There has not yet been a female president of the United States.

Barack Obama was the first African American president of the United States, serving from 2009 to 2017.

There has not yet been a Native American president of the United States.

There has not yet been a Hispanic president of the United States.

There has not yet been an Asian American president of the United States.