Planets and a little more
What is a planet?
A celestial body moving in an elliptical orbit around a star.
What is an Asteroid?
Small, rocky objects that orbit the Sun.
What is the Milky Way Galaxy?
The galaxy in which we live that contains the stars that make up the Milky Way.
What is a DWARF planet?
A celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such.
What is the Universe?
All existing matter and space considered as a whole.
What is the Geocentric model?
Having or representing the earth as the center.
What is the Big Bang?
Theory that describes how the universe expanded from an initial state of high density and temperature.
What is our Solar System?
The collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
What is the Heliocentric model?
Having or representing the sun as the center
What is a Terrestrial Planet?
Earth-like planets made up of rocks or metals with a hard surface.
What is a Galaxy?
A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
!BONUS QUESTION! How many miles is one AU (Astronomical Unit)?
93 million miles
What is a Gas Giant?
A large planet of relatively low density consisting predominantly of hydrogen and helium, such as Jupiter, Saturn, Uranus, or Neptune.
What is a Comet?
A celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
!BONUS QUESTION! How many miles is one Light Year?
5.88 trillion miles