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14744733025How many stars can be seen with the naked eye1,0290
14744733026Who invented the telescopeGalileo1
14744733027How many stars are in our galaxy100 billion2
14744733028How many galaxies are there100 billion3
14744733029What unit of measurement is used for spaceLight-year4
14744733030How does it take light to travel from the sun8min.5
14744733031How long does it take light to travel to the nearest star4ys6
14744733032Define: light-yearThe distance light travels in a year7
14744733033Define: quasarDistant star-like quality that gives off immense quantities of light8
14744733034Define: pulsarRapidly spinning star that has collapsed9
14744733035Define: cosmosThe universe. A complex and orderly system, as opposed to chaos10
14744733036Define: Entropy or the 2nd Law of ThermodynamicsEverything is getting worse11
14744733037Define: scienceThe study of observable laws12
14744733039What is scienceTestable explanations and predictions about the universe13
14744733038Why does science workBecause of predictable behavior14
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