The Universe
Galaxies
Lives of Stars
Relationships
Early Astronomers
100
The universe formed in an instant, billions of years ago, in an enormous explosion.
What is the Big Bang Theory?
100
Galaxies are huge groups of single stars, star systems, star clusters, dust, and gas bound together by this.
What is gravity?
100

A cloud of dust and gas that often will form into stars.

What is a nebula?

100

Bruno, Ptolemy, Copernicus, Kepler

What is Ptolemy.  B/C the other three supported the Heliocentric model.

100

The early astronomer who presented the geocentric model, or the model that all planets, including the sun, orbit the Earth.

Who is Ptolemy?

200
Three minutes after the Big Bang, the universe gradually cooled forming these.
What are the nuclei of the first four elements on the periodic table?
200

The Milky Way galaxy is said to contain this many stars.

What is between 100-400 billion stars?

200
The life span of a star depends on this.
What is its mass?
200

Spiral, Spherical, Elliptical, Irregular

What is Spherical.  B/C the other three are types of galaxies.

200
The early astronomer to discredit the geocentric model with his heliocentric model.
Who is Copernicus?
300
300,000 years after the Big Bang, these tiny particles formed.
What are atoms?
300

The Milky Way Galaxy is estimated to be this many light years across.

What is 130,000 Light Years?

300

The explosion of massive and supermassive stars after burning its nuclear fuel.

What is a supernova?

300

Red Giant, White dwarf, Black dwarf, Supernova

What is supernova.  B/C the other three are stages in the life cycle of sun-like stars.

300

Early astronomer who supported the heliocentric model after inventing the telescope.

Who is Galileo?

400
The Law that states the farther away a galaxy is, the faster it is moving away from us and are moving away from a center location.
What is Hubble's Law?
400
The three main types of galaxies.
What is spiral, elliptical, and irregular?
400

The stage when stars fuse all of their hydrogen into helium.

What is the Red Giant stage?

400

Oxygen, Energy, Liquid, Heavy Elements

What is oxygen.  B/C the other three are necessary for life to evolve.

400
First early astronomer to claim planets do not orbit the sun in perfect circles.
Who is Tycho Brahe?
500
Leftover thermal energy from the big bang that was distributed in every direction.
What is Cosmic Background Radiation?
500

The distance from Earth to the center of the Milky Way?

What is 26,00 light years?

500

The last stage of a massive star's life cycle.

What is a neutron star?

500

Helium, Oxygen, Carbon, Gold

What is gold.  B/C the other three are fused by stars before a supernova.

500
Early astronomer to discover planets revolve around the sun in ellipses, or oval shaped patterns.
Who is Kepler?
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