Short Definition: A galaxy is a system composed of a star and
an interstellar matter that is held together by the gravity force.
Detailed Definition: A galaxy is a vast collection of stars, their
solar systems, gas, and dust. In the centre of the galaxy a massive black hole
is placed. Galaxies have different shapes from one another, with variations
deriving from how the systems were created and later evolved. A few galaxies
resemble our own in spiral shape. They possess curved arms that give it a
pinwheel-like appearance. Others have smooth surfaces and oval forms.
Scientists refer to them as elliptical galaxies. There are galaxies that are
neither spirals nor ovals, either. They mimic blobs and have amorphous forms.
Each of these galaxies emits light that we can see from its stars. In the
future some galaxies will collide like NGC 4567 and NGC 4568 (commonly referred
to as the Butterfly galaxies) started to do so and some will drift apart that
the light from its stars will not reach the Earth.
Etymology: Old French from medieval Latin galaxia,
from Greek galaxias (kuklos) ‘milky (vault)’, from gala,
galakt-‘milk’.
Sample Sentence(s): When
the sky is dark, centre of our galaxy is perfectly visible.
Translations: French: Une galaxie
German: die Galaxie
Polish: Galaktyka
Swedish: En galax
Spanish: Una galaxia
Links to Videos/Articles: https://spaceplace.nasa.gov/galaxy/en/ https://en.wikipedia.org/wiki/Galaxy https://www.britannica.com/science/galaxy https://edition.cnn.com/2022/08/10/world/colliding-galaxies-gemini-north-image-scn/index.html
