[For Seniors] Trivia Quiz & Fun Facts about Stars. Brain Training

Mercury

The smallest planet in the solar system is Mercury. Mercury is the closest planet to the Sun and has a diameter of about 4,880 km. Compared to Earth, it is very small, and because its volume and mass are also smaller than those of the other planets, it is known as the smallest planet in the solar system.

0%

There is very little oxygen in space. In fact, the amount of oxygen in outer space is close to zero, with hydrogen and helium making up the majority. Because oxygen is often contained inside stars and planets or within atmospheres, it is extremely scarce on the cosmic scale.

one hundred billion

It is thought that there are about one hundred billion galaxies in the entire universe. Each of these galaxies contains billions to tens of billions of stars, scattered throughout the vastness of space. The galaxy we live in, the Milky Way, is just one of them. The number of galaxies may continue to increase, and the extent of the universe is immeasurable.

88 pieces

There are 88 constellations. These constellations are officially defined by the International Astronomical Union (IAU) and are recognized worldwide as the constellations observed across the sky. Constellations are shapes formed by connecting the stars that shine in the night sky, and since ancient times they have been given names based on myths and legends.

Saturn

The planet called “Satan” is actually Saturn. Saturn is the sixth planet from the Sun and is known for its distinctive rings.

star

A star that emits its own light is called a “fixed star” (a star). Stars shine in the night sky by releasing light and heat through their own nuclear fusion reactions. The Sun is one such example and is the star closest to us. In contrast, the Moon and planets do not emit their own light; they shine by reflecting the light of stars.

Greek mythology

Many constellations are based on Greek mythology. The ancient Greeks created constellations by likening the stars to heroes, gods, animals, and more from their myths. For example, Orion and Canis Major are such cases. Greek mythology gave stories to the constellations, making the night sky more captivating.