Exoplanets and Future Astronomy
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Browse the glossary using this index
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D
Dark energythe unknown component associated with accelerated cosmic expansion. | |
Dark matterunseen matter inferred primarily through its gravitational effects. | |
Detection biasthe tendency of a detection method to find some types of objects more easily than others. | |
Direct imagingdetecting light from a planet itself. | |
Doppler effectchange in observed wavelength caused by relative motion. | |