The Solar System
How old is our Solar System?
4.6 Billion Years old
Name the planets in order from the Sun outward.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
What is our galaxy called?
The Milky Way
What are comets made of?
What is a Star centered model called?
Heliocentric
How many planets are in the Solar System?
8
How many dwarf planets are recognized in the Solar System?
5: Pluto, Eris, Ceres, Makemake, Haumea
What is usually at the centers of galaxies?
Black holes
When a meteoroid hits the surface it is called a…
Meteorite
An Astronomicsl Unit is the distance between what two bodies?
Sun and Earth
What are the two most abundant elements in the Solar System?
Hydrogen and Helium
What kind of planet usually has the most moons?
Jovian or Gas Giants
Exoplanet
Where are most of the asteroids found within the Solar System?
The Asteroid Belt
What is a pattern of stars in the night sky called?
Constellation
What is the furthest point in our Solar System called?
The Oort Cloud
Which planet did Galileo point his telescope at and discover 4 moons of?
Jupiter
How old is the universe?
13.8 billion years
Where are most comets found within the Solar System?
The Oort Cloud and Kuiper Belt
This is the limit of magnitude that the human eye can see on a very clear and dark night.
About a 6.5 magnitude
What is the belt between Mars and Jupiter called?
The Asteroid Belt
Which planet was the only one discovered using mathematical equations?
Neptune
About how wide is the observable universe in light years?
About 93 billion light years
What are the three main types of meteorites?
Stony, Stony-Iron, and Iron
This is the brightest star in the night sky.
Sirius within the constellation Canis Major