12 Questions
What is the primary function of a star in a planetary system?
To provide energy to all the system's bodies
What is the term for a group of objects that are locked in orbit around a central star?
Planetary system
What is the characteristic shape of a spiral galaxy?
Long arms of stars and other material extending out from the center
What is the primary composition of a nebula?
Cloud of hydrogen gas, helium gas, dust, and plasma
What is a characteristic of a planet in our solar system?
It has cleared its orbit of all other material
What is the pattern of distance between planets in our solar system?
The distance between the inner planets is smaller than the distance between the outer planets
What is the primary characteristic that distinguishes dwarf planets from planets?
They have not cleared their orbits of all other material
Where are most asteroids in our solar system found?
Between Mars and Jupiter
What happens to meteoroids when they enter a planet's atmosphere?
They become meteors
What is the name of the theory that describes the shortest path to travel from one planet to another?
Hohmann's Theory
How often is it possible to travel from Earth to Mars with the shortest distance?
Once every two years
What is the characteristic that distinguishes comets from asteroids?
They have a thin atmosphere called a coma
Test your knowledge of the fundamental concepts in astronomy, including the Big Bang theory, types of galaxies, and nebulae. Learn about the Milky Way, elliptical, spiral, and irregular galaxies, and the composition of nebulae.
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