The exact shape of the Earth is called an oblate spheroid. This means the Earth is slightly flattened at the poles and bulges at the equator due to its rotation. The equatorial diameter is larger than the polar diameter, making ...
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Our galaxy is called the Milky Way. It is a spiral galaxy that contains billions of stars, including our Sun, and is just one of many galaxies in the universe. The Milky Way appears as a faint, milky band of ...
A human-made satellite is an artificial object intentionally placed into orbit around Earth or another celestial body. It serves various purposes like communication, weather monitoring, navigation, and scientific research. These satellites are launched using rockets and stay in orbit due ...
The word “geography” originated in ancient Greece around 300 BCE. It comes from the Greek words “geo,” meaning Earth, and “graphein,” meaning to write or describe. The term was first used by the scholar Eratosthenes to describe the study of ...
Earth is called the “Blue Planet” of the solar system due to its vast oceans and abundant water, which give it a blue appearance from space. The reflection of sunlight off Earth’s surface and atmosphere enhances this blue hue, making ...
Mars is called the “Red Planet” of the solar system due to its reddish appearance, which is caused by iron oxide, or rust, on its surface. This distinctive color makes Mars stand out in the night sky and gives it ...
The brightest planet in the solar system is Venus. It shines brightly in the sky due to its thick atmosphere, which reflects sunlight very effectively. Venus often appears as the third-brightest object in the sky after the Sun and the ...
The word “planet” comes from the Greek word “planētēs,” meaning “wanderer.” Ancient Greeks used this term to describe celestial bodies that moved against the backdrop of fixed stars. Unlike the stars, which appeared stationary, planets seemed to wander through the ...
The closest planet to the Sun is Mercury. It orbits the Sun at an average distance of about 57.9 million kilometers (36 million miles). Mercury’s proximity to the Sun results in extreme temperature variations and a lack of a significant ...
Venus is considered Earth’s twin due to its similar size, mass, and proximity to the Sun. Both planets have comparable compositions and densities. However, despite these similarities, Venus has a harsh environment with extreme temperatures and a thick, toxic atmosphere, ...