True or False: Mercury can get up to 800 degrees Fahrenheit on the sunny side & below -290 degrees Fahrenheit at night (on the dark side).
True
A moon is a natural ___ of a planet.
Satellite
How many main planets are in our Solar System?
8
Which planet is the closest planet to our Sun?
Mercury
How many moons are in our Solar System?
More than 200+
The ____ is all existing matter & space considered as a whole.
Universe
True or False: One day-night cycle on Mercury takes 100 Earth days?
False
How big, in light years, is our galaxy?
100,000 light years
How many millions of years does it take for our Solar System to orbit around the galactic center?
230
A ___ System has a Star, Planets & Moons, as well as other space debris which all orbit the Star.
Planetary System
What is the name of our galaxy?
The Milky Way
How long does it takes Mercury to orbit the Sun (make one revolution)?
88 Earth days
True or False: Mercury is the hottest planet in our Solar system?
False
The Universe is ___ billion light years in diameter.
10
Mercury has lava flows, but no _____.
Volcanoes
What galaxy is the closest to us?
The Andromeda Galaxy
A ___ is a system of billions of stars, together with gas & dust, all held together by gravitational attraction.
Galaxy
Mercury is the ____ planet in our Solar System (size).
Smallest
True or False: Mercury is about 36 million miles away from the Sun.
True