Survey
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* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Size and Scale of the Universe Review Solar System Review The rocky planets are closest to the Sun. The rocky planets are smaller than the gas giants. Solar System Review The rocky planets have fewer moons (0 to 2). The rocky planets’ days are long (24 hours to 243 days). Solar System Review The rocky planets’ years are short (88 days to two years). Solar System Review The gas giants are farthest from the Sun. The gas giants are larger than the rocky planets. Solar System Review The gas giants have many moons (17 to 63). The gas giants’ days are shorter (10 hours to 17 hours). Solar System Review The gas giants’ years are long (12 years to 165 years). From Smallest to Largest Earth Sun From Smallest to Largest Solar System From Smallest to Largest Milky Way Galaxy From Smallest to Largest Local Group From Smallest to Largest Virgo Supercluster From Smallest to Largest Universe What is a light year? The distance light travels in one year. It is 6,000,000,000,000 miles. What is a light year? Why do we use the light year? Because distances in space are so large. Didja ya know? Space is mostly empty space. The Solar System, Milky Way, all the galaxies combined are very, very, very ,very small compared to the universe. Can we travel to another star? No! Can we travel to another star? Because distances in space are so large.