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Most Important Terms Related To Universe | World General Knowledge

Solar system
The Solar system consists of the Sun and the planets that move around the Sun in oval paths called orbits. A planet is a vast ball of rock or gas that travels in orbit around a star. There are other objects in our solar system too, such as moons and asteroids.

Astronomical Unit
The average distance between Earth and the Sun, 1.5 x 108 km

Aurora
The glowing light from solar particles interact with Earth’s magnetic field is called aurora

Comet
One of the small, icy bodies that orbit the sun that make tails of gas and dust when they get close to the sun

Ecliptic
The path the Sun seems to follow in the sky