Types of galaxies
This type of galaxy has a flat rotating disk with arms full of stars, gas and dust
spiral galaxy
A small irregular galaxy rich in gas and dust is known as this.
dwarf irregular galaxy
According to Newton, objects with this property attract each other.
Mass
Clue: These massive balls of hot hydrogen and helium produce energy through fusion.
Stars
Clue: The distance light travels in one year.
Light Year
These galaxies are round or oval-shaped and contain mostly old stars.
Elliptical Galaxy
These galaxies are distorted due to close gravitational interactions with other galaxies.
Interacting Galaxies
Clue: When distance between objects doubles, gravitational force becomes this fraction.
1/4
Clue: A natural satellite orbiting a planet is called this.
Moons
The boundary of a black hole where nothing can escape.
Event Horizon
These galaxies have no defined shape and look uneven or chaotic.
Irregular galaxy
These long streams of stars and gas are pulled out during galaxy collisions
Tidal Tails
How is the strength of gravity between a 5000 lb moon and a 50,000 lb Planet that is 2 light years away
Strong
This cloud of gas and dust is the birthplace of stars.
Nebula
Clue: This unit measures distance within our solar system (about 93 million miles).
Astronomical Unit
The Milky Way belongs to this galaxy type
Spiral Galaxy
A collision that creates a round structure of stars forms this type of peculiar galaxy.
Ring Galaxy
Clue: These form when gravity pulls gas and dust together inside a nebula.
Clue: This type of galaxy contains billions of stars and exists within larger structures.
Galaxy
How is the Universe Organized from smallest to largest?
These galaxies form when gravitational interactions distort their original structure.
Peculiar Galaxies
Name the famous interacting galaxy pair shaped like the legs of an insect.
Antennae Galaxies
Clue: These form when leftover dust around a young star sticks together into larger pieces.
Planetesimals
Clue: A region where gravity is so strong that not even light escapes.
Black Hole
Clue: The process that powers stars by combining hydrogen into helium.
Nuclear Fusion