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22 Cards in this Set
- Front
- Back
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Nuclear Fusion
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Two or more atomic nuclei join together.
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Solar System
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Collection of planets and their moons in orbit around the sun.
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Planetesimals
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A body that could come together with many others under the force of gravity.
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Solar Wind
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A constant flow of charged particles that originate from the sun.
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Solar Flare
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A short explosion of intense high energy.
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Sun Spot
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A cooler spot on the sun that is darker than usual.
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Photosphere
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Layer on the sun that we can see from Earth.
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Aurora
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Also known as the Northern lights which is a natural phenomenon.
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Red Giant
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A very large star with low surface temperature.
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White Dwarf
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A very dense and small star that is usually the size of a planet.
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Red Shift
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Planets moving away from distant galaxies.
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Galaxy
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A system of millions of billions of stars with gas and dust
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Milky Way
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The galaxy that contains the solar system
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Light Year
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A unit of length that measures speed and distance
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Prominence
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Also called a solar prominence-this means an eruption of flame like tongue of relatively cool density
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Solar Nebula
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A cloud of gas and dust which formed our solar system about 5 billion years ago
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Corona
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Very hot outer atmosphere of the sun
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Supernova
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A star that increases suddenly in brightness
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Black Hole
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A region of space where not even light can escape
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Neutron Star
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A star that collapsed under its own gravity
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Main Sequence Star
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A continuous band of stars
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Big Bang Theory
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The belief that scientist have about how our solar system was formed
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