Terms
The study of the stars, planets, and all other heavenly bodies
Astronomy
The stars outlining an imaginary picture in the sky
Constellation
What is the name of the North Star?
Polaris
In what constellation is the star Polaris?
Ursa Minor
Scientists who study outer space
Astronomers
A spiral galaxy in which the spiral arms are attached to a straight "bar" that runs through the center of the galaxy
Barred spiral
Which star is the brightest in the sky?
Sirius
In what constellation is the star Castor?
Gemini
A star system containing from millions to billions of stars
Galaxy
The galaxy in which we live
Milky Way
What is the most distant object visible with the unaided eye?
Andromeda galaxy
In what constellation is the star Regulus?
Leo
The force that resists motion
Friction
The cluster of about 40 galaxies that includes the Milky Way
Local Group
What are the three types of galaxies?
Spiral, elliptical, irregular
In what constellation is the star Deneb?
Cygnus
An area containing no air or any other matter
Vacuum
Large clouds of gas and dust in space
Nebulae
What are the three galaxies closest to our own?
Sagittarius Dwarf galaxy, Lage Magellanic Cloud, Small Magellanic Cloud
In what constellation is the star Algol?
Perseus