| Comets | Astroids | stars | Star Systems | Galaxies |
|---|---|---|---|---|
|
Mixture of ice, rock and dust
What are comets believed to be made of?
|
Planetoids
Asteroids are sometimes called by which of these names?
|
Red
Most stars are what color dwarfs
|
A nova is a strong, rapid increase in the brightness of a star
What is a nova?
|
Milky way
What galaxy are we in?
|
|
hairy stars
What did the ancient Greeks call comets?
|
Mars and Jupiter
The main asteroid belt is situated between which heavenly bodies?
|
Sun
What is the closest star
|
NO
Are all stars the same?
|
A galaxy is an enormous collection of a few million to trillions of stars, gas, and dust held together by gravity.
What is a galaxy
|
|
1577
In what year were comets correctly recognized as members of the Solar System?
|
Apollo
Asteroids that are always closer to the Sun than the Earth are called __________ asteroids.
|
MASSIVE
Are short lived stars MASSIVE or tiny
|
By measuring the size of the orbit, the stars' orbital speeds, and their orbital periods
How do you measure the mass of a star?
|
250,000 galaxies
How many galaxies are known to man?
|
|
Comet Encke
Which comet has the shortest known orbital period?
|
False
If all of the known asteroids were lumped together, they would make a planet bigger than Jupiter.
|
Dense knots contained in large clouds of dust and gas
How are stars formed?
|
The galaxy
Where are stars born?
|
Sometimes they orbit round each other.
Do galaxies orbit around anything?
|
|
Fred Whipple
Who proposed the "dirty snowball" theory about comets?
|
True
Most meteorites probably originate from the asteroid belt.
|
Draco
Which constellation has the name of a Harry Potter Character?
|
The Sun can "burn" hydrogen to helium without the need for oxygen.
How can a star burn with no oxygen?
|
The Milky Way. The Magellanic Clouds.Andromeda Galaxy
Can any galaxies be seen with the naked eye?
|
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