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science vocab

this is the definition

what are stars composed of gas-hydrogen and helium
what do stars do emit light
what is the definition of the solar system a star with all the small bodies around it
what is the definition of the universe space with all the matter and energy in it
what is the structure of the universe tzu bubble-clusters and superclusters on the walls and voids in the middle
what are the three types of galaxies spiral eliptical irregular
compare the sun to other stars (size) small
names of the planets in order mercury venus earth mars jupiter saturn uranus neptune
which galaxy do we live in milky way
list three details of the terrestrial planets and the gas giants terrestrial-rocky hot small gas giants-made of gas big cold
what is a light year how for light travels in a year
why do we use them instead of miles because space is so big
Created by: JohnCulbertson