[For Seniors] Introducing Trivia Quizzes & Fun Facts About Space!

4.6 billion years ago

The Earth is said to have formed about 4.6 billion years ago. This age has been estimated by analyzing meteorites and lunar rocks.

Neptune

Neptune is about 4.5 billion kilometers from the Sun and is the most distant planet in the solar system. Pluto was once considered the most distant planet in the solar system, but it was reclassified as a dwarf planet in 2006.

Venus

Venus is one of the planets in the solar system closest to Earth, and it orbits the Sun in about 225 days. The “Evening Star” refers to Venus when it is visible in the western sky after sunset, while Venus seen in the eastern sky just before sunrise is called the “Morning Star.”

Jupiter

Jupiter is a gigantic planet said to be 11 times the size of Earth. Its gravity is also about 2.3 times that of Earth.

Meteor impact

Because the Moon has no atmosphere, it cannot block incoming meteorites the way Earth does, and over long periods many meteorites have collided with it. These impacts excavated the surface and formed craters.

88 pieces

In 1928, the International Astronomical Union defined 88 constellations for the entire sky, and they have been used unchanged to this day. Each constellation also has a scientific name and a three-letter alphabetic abbreviation.

Russia

Russia launched an artificial satellite called Sputnik 1 on October 4, 1957. Sputnik 1 was a spherical satellite with a diameter of 58 cm and a weight of 83.6 kg.