Asteroids
Asteroids are made of _________ and __________.
Rock and metal.
Meteors are made of _________.
Rock
Comets are made of __________ and _________.
Ice and frozen gases
Stars are made of ________.
Gas
What is the name of our galaxy?
The Milky Way.
Asteroids orbit the _______.
Sun
True or False?
Meteors are falling stars.
False
True or False?
Comets orbit the Sun.
True
A group of stars is called a _______________.
Constellation
What type of galaxy has arms extending out from the center?
Spiral
The band of asteroids in the solar system is called the _____________ __________.
Asteroid Belt
True or False?
Meteors can be as small as a grain of sand.
True
How many parts does a comet have?
Three-
nucleus, coma, and tail
The first stage of a star life cycle is the ___________.
Protostar
How many stars are in our galaxy?
200 billion
There are ___________ of asteroids in the solar system.
Millions
Why do meteors glow and create a streak of light?
They burn as they enter Earth's atmosphere.
Scientists believe that comets come from beyond the planet ________________.
Neptune
A star that has cooled and does not give off light is in the __________ __________ stage.
Black Dwarf
What is the name of the telescope in space scientists use to study space?
Hubble
These asteroids orbit between the planets _________ and ___________.
Mars and Jupiter.
When a meteor hits the Earth's surface it is called a ________________.
Meteorite.
The best known comet is named __________ _______.
Halley's comet
How many constellations are there?
88
Why can't 2/3 of the world's population see the Milky Way any longer when they look up at the night sky?
Light pollution