Definitions
What is deep space?
Space beyond our solar system.
An instrument to observe deep space that is used nowadays.
A telescope
What unit of measurement do scientists use to measure distance between stars?
Light-years
What is Earth's star?
The sun
Explain how knowing more about space changes the way you look into it.
Identify different space elements.
What is Voyager 2?
A space probe
Why would Earth disappear as you left our solar system?
Because it would be too far to be seen and it doesn't have a bright glow.
How many kilometers is one light-year?
About 9.5 trillion kilometers.
How would you compare the life cycle of a star with a human being's life cycle.
Stars live for billions of years and humans only live for a few dozens of years.
What methods do you hope people will use to explore space in the future?
Space travel
What is Alpha Centauri?
A star
What would a constellation look like if you passed it in a spacecraft?
They would be separated stars very far away from each other.
How far away from Earth is the sun?
8 light-minutes
Why should you avoid a black hole if you travel in deep space?
Because of the very strong gravity pull. Even light can't escape.
Why are people interested in exploring deep space?
To learn about our universe.
What is a light-year?
The distance covered by light in 1 year.
How can cosmologists tell that exoplanets exist without being able to see them?
They observe how stars wobble as they are pulled by the gravity of the planets that orbit them.
How far away is the closest star other than the sun?
4.2 light-years
What is the Milky Way's type of galaxy?
spiral galaxy
What might Voyager 2 discover in deep space?
Habitable planets.
What is an exoplanet?
A planet outside our solar system.
What has Voyager 2 discovered about the solar winds?
That they cause a bump where the solar system ends and deep space begins.
How would you demonstrate the difference between our solar system and the universe?
Demonstrating how small our solar system is within the universe.
How are supernovas formed?
When an old star collapses, it creates a huge explosion.
What do you think a faraway planetary system might look like?
Similar to ours.