a
a push or pull
What is force?
a rocky object in outer space
What is an asteroid?
scientist who studies outer space
What is an astronomer?
a large round object in outer space
What is a planet?
air that surrounds a planet
What is atmosphere?
all the planets and other objects that orbit a star
What is a solar system?
planet that orbits a star outside our solar system
What is an exoplanet?
What is Goldilocks zone?
invisible force that pulls object toward center of planet, moon, or other object
What is gravity?
What is Venus?
first person to walk on the moon
Who is Neil Armstrong?
called the Red planet
What is Mars?
planet that has no atmosphere
What is Mercury?
Planet that has it poles on its side
What is Uranus?
Four gas giants
What are Jupiter, Saturn, Uranus, and Neptune?
distance from Earth to sun
What is 93 million miles?
number of astronauts who have walked on moon
What is 12?
time it takes light from sun to reach Earth
What is 8 minutes?
What is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto?
separates inner planets from outer planets
What is the asteroid belt?