Space 1
What is the sun?
A star
What is at the center of our solar system?
The sun
What galaxy is Earth in?
The Milky Way Galaxy
Why are icy and gaseous materials far away from the sun?
The cannot survive heat
What do we call planets in other places?
Exoplanets
What was the first thing formed in our universe?
The sun
Do we know how many galaxies there are?
No
What shape are galaxies?
Spiral
What galaxy is closest to ours?
Andromeda
How long did the Big Bang take?
13.8 billions years
What is a black hole?
An area of such immense gravity that no light can escape
What does a black hole's gravity do to objects that fly close to it?
Gravity will stretch it out like a piece of spaghetti
Who came up with the idea of gravity?
Albert Einstein
What does gravity do?
Makes pieces of matter clump together into planets, moons, and stars, makes the planets orbit the stars, makes the stars clump together in huge, swirling galaxies.
What do planets form from?
The material leftover when a star is born
What are the bits that never formed planets called?
Asteroids
How long ago did the universe begin?
4.6 billion years
How did the planets form?
Material collided to form objects, and objects collided together to form planets
What three things have to be true for a planet to be considered a planet (in our solar system)?
1. Orbit around the sun
2. Big enough to have a spherical shape
3. Big enough that its gravity cleared away any other objects of a similar size near its orbit around the Sun
Is a Brown Dwarf bigger or smaller than a star?
Smaller than a star