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an object in space made of gases in which nuclear fusion reactions occur that emit energy. |
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atoms combining and releasing large amounts of energy. |
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very great in size or amount |
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the sun and eight planets that revolve around it |
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What is Gravity's role in the formation of stars? |
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gravitational attraction between particles is how stars are formed. |
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to gather together more and more things |
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to move around another object |
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The closer a planet is to the ________ the faster it moves |
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huge collections of stars |
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having two halves that are exactly the same shape and size |
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galaxies that are oddly shaped |
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a scientist who studies stars, planets and other objects in space |
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device shaped like a long tube that helps you see things that are far away |
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How do astronomers observe the solar system? |
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to identify the presence of something |
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relating to light or the way we see things |
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the length of a line passing from one side of a circle to the other thru the center |
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a person who travels and works in space |
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Closet to the sun: Mercury, Venus, Earth and Mars they are made of solid rocky materials. |
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farthest from the sun: Jupiter, Saturn, Uranus and Neptune, They are made of ice and gases |
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What was the first optical telescope called |
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a flight or trip to perform a specific task |
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something in the shape of a ball |
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to place into groups based on the way they are alike |
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Plute, makemake, cere, haumea are smaller then the earths moon |
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what is the smallest dwarf planet |
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what is the largest dwarf planet |
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small rocky particles that move thru space |
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a meteoroid that strikes a planet or a moon |
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How did the solar system form? |
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when gravity pulled a cloud of dust and gas together to form our solar system. |
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contains two fixed points called a Foci (Focus) |
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Describe the path of Earth if the Sun’s gravity were to suddenly stop |
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Earth would travel in a perfectly straight line at 30 km/s |
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why Earth has fewer moons than Jupiter. |
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Because of Gravity. Jupiter is larger and closer to the sun |
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