Stars of Wonder
A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
Galaxy
The Red Planet is Home to the largest Volcano in the Solar System.
Mars
________ are large groups of stars bound together by gravity.
Star Clusters
The _________ is the gravitationally bound system of the Sun and the objects that orbit it.
The Solar System
What is the only planet in the solar system that supports life?
Earth
A galaxy in which the stars and gas clouds are concentrated mainly in one or more spiral arms.
Spiral Galaxies
This planet is the windiest planet in the solar system.
Neptune
Also known as galactic clusters, these clusters are made up of hundreds or thousands of stars that are loosely grouped together.
Open Clusters
________ is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy mainly as light, ultraviolet, and infrared radiation. It is the most important source of energy for life on Earth.
The Sun
What is the name of our galaxy?
Milky Way
A galaxy that has a generally elliptical shape and that has no apparent internal structure or spiral arms.
Elliptical Galaxies
This planet rotates top to bottom, instead of side to side.
Uranus
These are the largest and most massive star clusters, made up of older stars that are tightly packed in a spherical shape.
Globular Clusters
________ are frozen leftovers from the formation of the solar system composed of dust, rock, and ices.
Comets
A _________ is a tool that astronomers use to see faraway objects.
telescope
A galaxy with no specific form and a relatively low mass.
Irregular Galaxies
This planet has a great red spot, which is actually a giant hurricane.
Jupiter
Groups of three or more stars are called a _________.
multiple star system
_________ are small, rocky objects that orbit the Sun. Although asteroids orbit the Sun like planets, they are much smaller than planets. There are lots of asteroids in our solar system. Most of them are located in the main _______ belt – a region between the orbits of Mars and Jupiter.
Asteroids
A Moon Rover is a example of one of these?
Space Prone
These types of galaxies are active young galaxies with black holes at their center. What is the name of these types of galaxies?
Quasar
This planet is the closest planet to the sun.
mercury
Star systems that have two are called________.
Binary star systems
A heavenly body similar to a planet but too small to clear other objects from its orbit.
Dwarf Planet
A unit of measurement equal to 149.6 million kilometers or 93,000,000 miles, the mean distance from the center of the earth to the center of the sun.
Astronomical Unit