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29 Cards in this Set
- Front
- Back
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Asterism |
A prominent pattern or group of stars, typically having a popular name but smaller than a constellation. |
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Black Hole |
A region of space having a gravitational field so intense that no matter or radiation can escape. |
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Main Sequence Star |
A star that is fusing hydrogen inside of its core and has a stable balance of outward pressure. |
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Neutron Star |
An object with a small radius and very high density. Produced by an imploded star that could not create a black hole. |
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Nuclear Fusion Reaction |
The process that fuels our solar system's sun. |
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Parallax |
Measure distance between nearby stars . |
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Red Giant |
Very large star that has low surface temperature and high luminosity. |
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Star |
Ball of plasma held together by its own gravity. |
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Supernova |
A sudden brightness in a star because most of its mass was ejected from the star in an explosion. |
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White Dwarf |
A small, very dense star that lost most of its nuclear fuel. |
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Binary Star |
Two stars that revolve around a common centre of mass. |
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Dwarf Galaxy |
100 million up to 7 billion stars. |
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Elliptical Galaxy |
A galaxy having an ellipsoidal shape and bright features. |
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Galaxy |
Gravitational bound stars, gas, dust, and dark matter. |
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Globular Cluster |
Sphere shaped cluster of stars around a satellite. It is tightly bound by gravity.
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Irregular Galaxy |
A galaxy that is not definitely shaped with a lot of gas, dust, and new stars. |
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Milky Way Galaxy |
The spiral shapes galaxy carrying our solar system. |
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Open Cluster |
Stars formed by the same molecular cloud. |
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Spiral Arm |
Spirals connected to the centre of a galaxy |
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Spiral Galaxy |
Stars and gas clouds are shaped in a 'spiral' |
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Star Cluster |
Star with a common origin and are gravitationally bound for quite of time. |
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Star System |
A small number of stars that orbit one another. |
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Big Bang Theory |
Theory that the universe was created by a big explosion at one point in space. |
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Cosmology |
The Science of the origin of the universe. |
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Dark Energy |
An unknown force of energy that counteracts gravity. |
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Dark Matter |
Unseen matter that makes up more than 90% of the entire universe |
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Doppler Effect |
A change in wave frequency, sound, and light. |
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Redshift |
The reddening of an object moving away from the observer. |
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Universe |
All existing matter in as a whole. |
