Definitions
- Referring to a large system of stars, planets, gas, and dust held together by gravity. - Talking about a collection of billions of stars and other celestial objects bound together by gravity. - Describing a group of stars that share a common origin and are held together by mutual gravitational attraction.
- Referring to all existing matter, energy, space, and time as a whole. - Talking about the entirety of everything that exists, including all galaxies, stars, planets, and other celestial objects. - Describing the totality of all physical matter and energy in existence, including all galaxies and their contents.
List of Similarities
- 1Both refer to vast expanses of space beyond Earth.
- 2Both involve celestial objects such as stars, planets, and galaxies.
- 3Both are related to astronomy and astrophysics.
- 4Both are constantly expanding and evolving.
- 5Both are incomprehensibly large and complex.
What is the difference?
- 1Scope: Galaxy refers to a specific system of stars and celestial objects, while universe encompasses all matter, energy, space, and time.
- 2Size: Galaxy is relatively smaller than the universe, which is infinitely large and expanding.
- 3Composition: Galaxy is made up of stars, planets, gas, and dust, while universe includes all forms of matter and energy.
- 4Study: Galaxy is studied to understand its structure, formation, and evolution, while universe is studied to understand its origins, evolution, and fundamental laws of physics.
Remember this!
Galaxy and universe are both related to astronomy and astrophysics, but they differ in scope, size, composition, origin, and study. A galaxy is a system of stars, planets, gas, and dust held together by gravity, while the universe encompasses all matter, energy, space, and time. The universe is infinitely large and expanding, believed to have originated from a single point in space and time, and studied to understand its fundamental laws of physics.
