Question

In which list are Celestial features correctly shown in order of increasing size?
1. Solar System - Galaxy - Planets - Universe
2. Planets - Solar System - Galaxy - Universe
3. Galaxy - Solar System - Universe - Planet
4. Universe - Galaxy - Solar System - Planet

Answer 1

Correct Answer - Option 2 : Planets - Solar System - Galaxy - Universe

The correct answer is Planets - Solar System - Galaxy - Universe.

 

• From largest to smallest they are Universe, galaxy, solar system, star, planet, moon, and asteroid.

Asteroid

• An asteroid is a rocky body that lies in the asteroid belt between Mars and Jupiter.
• They are typically quite small objects.
• The largest asteroid Ceres has been reclassified as a dwarf planet.

Moon

• A moon is typically a rocky body that is in orbit around a planet.
• Some moons such as our Moon are quite large and are typically bigger than an asteroid.
• Some moons can actually be smaller than some asteroids.

Planet

• A planet is a nearly spherical body that is in orbit around the Sun.
• Planets are larger than moons.

Solar System

• A solar system is a star and all of its planets, asteroids, comets, and other bodies. It is significantly bigger than a star.

Galaxy

• A galaxy, such as our Milky Way Galaxy, is a collection of solar systems orbiting around a central core.
• Most galaxies have a supermassive black hole at their centers.
• Galaxies also form clusters which are large-scale structures.
• The universe is everything.
• It contains billions of galaxies.