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Space
H
Alphabetical index
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Habitable zone
The habitable zone (HZ) around a star was defined by Hart ...
Hartley 2 comet
In 1986, the year of the grand return of Halley's comet, the ...
Hawking radiation
Hawking radiation postulates the permanent creation of ...
Herbig-Haro object
Astrophysical objects associated with the names of Guillermo ...
Hercules globular cluster
The Hercules globular cluster was discovered in 1714 par E. ...
Hertzsprung-Russell diagram
The Hertzsprung-Russel diagram is the classification of ...
Hyades
The Hyades open cluster contains 140 stars of which the age ...
Hyakutake's comet
At the beginning of 1996, the astronomical community only ...
Hydra constellation
The constellation of Hydra, from the Latin Hydra, a female ...
