Universe
Galaxies
Stars
Solar Systems
Exploration
100
The elements stars are made of
What are hydrogen and helium?
100
The spectrum used to study galaxies
What is the electromagnetic spectrum?
100
When stars are twins to other stars
What are binary stars?
100
When our universe was born
What happened 4.6 billion years ago?
100
It has carried a little over 500 people into space
What has the space shuttle done?
200
The distance across the Milky Way
What is 100,000 light years across?
200
The kind of galaxy our Milky Way is
What is a barred-spiral galaxy?
200
The brightness of a star
What is luminosity?
200
A star (or two) with a series of objects that revolve around it
What is a system?
200
The amount of time we have been studying the universe
What have we been doing scientifically for 40 years?
300
The speed of a feather dropped in a vacuum
What is equal to the speed of a dropped baseball?
300
The three main kinds of galaxies
What are spiral, barred-spiral and elliptical galaxies?
300
A system of letters and numbers
How do scientists classify stars?
300
A way Venus and Earth are alike
What are two planets with north and south poles?
300
The main three types of lenses
What are concave, convex, and planar lenses?
400
Specific units or packets of energy
What are photons?
400
The year the Voyager left Earth and the year it is expected to arrive at the edge of our universe
What happened in the year 1977 and what is going to happen in 2015?
400
A nebula after an explosion
What is a planetary nebula?
400
The planet with an atmosphere made up of almost 99% hydrogen
What is the element Saturn is mostly made up of?
400
The name of the first satellite ever launched
What was the Sputnik?
500
The particles that pull objects together in gravity
What are molecules?
500
The amount of time it would take to reach the Sagittarius Dwarf
Where you could go in 78,000 light years
500
Small particles leaving a star's nuclear reaction
What are bioproducts?
500
How auroras are created
What happens when solar winds collide with the magnetosphere?
500
They are three major parts of a rocket during take off
What do 2 rocket boosters and an external tank do?
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