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Characteristics of Stars
Lives of Stars
Star Systems and Galaxies
History of the Universe
Potpurri
100
The closest star to Earth.
What is the Sun?
100
The name of the cloud of dust and gas a star begins as.
What is a nebula?
100
The name of the galaxy in which we reside.
What is the Milky Way?
100
The theory most astronomers agree on how the universe formed.
What is the Big Bang theory?
100
300,000 km/s
What is the speed of light?
200
What a light-year measures.
What is distance?
200
The length of time a star lives depends on this.
What is (initial) mass?
200
When one star in a star system blocks the light of the other star in the system.
What is an eclipsing binary?
200
How long ago astronomers believe the universe was formed.
What is 10-15 billion years ago?
200
The gas that makes up most of a star.
What is hydrogen?
300
The apparent change in position of an object due to perspective.
What is stellar parallax?
300
The length of time a red dwarf can live.
What is a trillion years?
300
The name of closest galaxy to the Milky Way.
What is Andromeda?
300
The ball of material that the universe started out as.
What is a singularity?
300
What a super giant star will eventually result as.
What is a black hole?
400
How stars make their energy.
What is nuclear fusion?
400
The reason a blue giant lives for a shorter time than a red dwarf.
What is that a blue giant burns fuel faster?
400
The Milky Way galaxy is this type of galaxy.
What is a spiral galaxy?
400
Name of a theory in which the universe has always been as it is.
What is the Steady-State theory?
400
The brightness a star would have if it were seen from a standard distance from Earth.
What is absolute magnitude?
500
The three characteristics by which stars are classified.
What are size, temperature and brightness?
500
The stage in a small or medium sized star's life just before becoming a white dwarf.
What is a red giant?
500
The three main categories of galaxies.
What are elliptical, spiral and irregular?
500
The scientist who first proposed the Big Bang theory.
Who is George LeMaitre?
500
The evidence that scientists have that supports the expanding universe.
What is galaxies moving away from us?