He showed that that the Earth is not the center of the universe.
Who is Copernicus?
Earth, Solar System, Milky Way, Local Group. Local Supercluster, Universe
What is our cosmic address?
This is how our sun moves in the Milky Way
What is randomly?
This revealed the presence of dark matter and dark energy
What is the Milky Way's rotation?
____________ or _____________is the distance light travels in a year (both the name and the actual distances)
What is a light-year or approximately 10 trillion kilometers?
His study of planetary motion lead to his formulation of the laws of motion and gravity.
Who is Newton?
One year
How long does it take the Earth to revolve or orbit the sun.
Because they are so far away that we cannot easily notice their motion.
What do the patterns of constellations seem to be fixed even though the stars are moving?
We study the speeds of stars at difference distances from the galactic center to determine this.
How do we determine how mass is distributed in the galaxy?
Discoveries unearthed using the Hubble Telescope proved that universe is ___________
What is expanding?
This is when Copernicus and Newton existed on our cosmic calendar.
What is one second.
This is the "tilt" of the Earth's axis.
23.5 degrees
A great island of stars held together by gravity and orbiting a common center?
What is a galaxy?
Dark matter is the major component.
What is most of the mass in the galaxy comprised of?
The more distance galaxies are moving away from us ___________________ than nearby galaxies.
What is faster?
In February
On the cosmic calendar, when was the Milky Way Galaxy probably formed.
What do we call something in space moving toward the center of Earth?
About one of 100 billion
The Milky Way is one galaxy out of how many total galaxies?
This is the dominate source of gravity.
What is dark matter?
____________ marks the boundary of the observable universe.
What is 14 billions light-years?
The day after Christmas.
This is the length of earth's rotation.
What is 24 hours?
They recycle material expelled from dying stars into new generations of stars and planets and earn the name cosmic recycling plants.
What are galaxies?
Dark matter significantly outweighs the matter that makes them up.
What are planets and stars?
In september.
On the "cosmic calendar" when was our solution (including our sun and Earth) formed?