Galaxies
How old do scientists think the universe is?
13.8 billion years
These are made up of ice and dust.
Comet
Star life cycles are based on their ...
Mass
Their shape
Location of most asteroids in our solar system.
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Asteroid belt
This is the main elements that stars are made of.
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Hydrogen & Helium
Do scientists think the universe is shrinking, expanding, or staying the same?
Expanding
What is the brightest asteroid visible from earth?
Vesta
What is the first step in a star's life cycle? (sometimes referred to as a "star nursery")
Nebula
List the 3 galaxy classifications
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Spiral, Elliptical, Irregular
What determines the direction of a comet's tail?
Location of the Sun
This is the stage where stars spend about 90% of their life in.
Main Sequence
Orion Arm
These are likely broken off fragments of other space objects that are still in space.
Meteoroids
What process found in stars produces light and heat?
Nuclear fusion
What is at the center of spiral galaxies?
Black hole
This is also known as a "shooting star"
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Meteor
What will our sun eventually turn into at the end of its life cycle?
Black Dwarf
What is the most abundant type of galaxy?
Elliptical
Term for when this object officially enters Earth's atmosphere and begins to burn up.
Meteor
What are the two possibilities for stars after a supernova?
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Neutron Star or Black Hole
What galaxy is considered our neighbor and we might collide with in 4 billion years?
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Andromeda Galaxy
Meteorite
How are a planet's mass and it's gravitational force related?
Larger the mass = stronger gravity