GENERAL KNOWLEDGE

Detailed explanation-1: -From largest to smallest they are: Universe, galaxy, solar system, star, planet, moon and asteroid.

Detailed explanation-2: -In order from smallest to largest, some important terms to remember are: planets and stars, solar systems, galaxies, the universe. Each term is a component of the next.

Detailed explanation-3: -The biggest single entity that scientists have identified in the universe is a supercluster of galaxies called the Hercules-Corona Borealis Great Wall. It’s so wide that light takes about 10 billion years to move across the entire structure. For perspective, the universe is only 13.8 billion years old.

Detailed explanation-4: -Matter and energy are the two basic components of the entire Universe. An enormous challenge for scientists is that most of the matter in the Universe is invisible and the source of most of the energy is not understood.