HAA meaning in Space Science ?

Answer: What is High Altitude Airship mean?

Atmospheric satellite (United States usage, abbreviated atmosat) or pseudo-satellite (British usage) is a marketing term for an aircraft that operates in the atmosphere at high altitudes for extended periods of time, in order to provide services conventionally provided by an artificial satellite orbiting in space.

Atmospheric satellites remain aloft through atmospheric lift, either aerostatic/buoyancy (e.g., balloons) or aerodynamic (e.g., airplanes). By contrast, conventional satellites in Earth orbit operate in the vacuum of space and remain in flight through centrifugal force derived from their orbital speed.

To date, all atmosats have been unmanned aerial vehicles (UAVs).

reference

Full Form	Category
Harvard Alumni Association	Academic & Science
Harvard Athletic Association	Academic & Science
Hungarian Astronomical Association	Academic & Science
Hastings Architecture Associates	Academic & Science
Hillsboro Aero Academy	Academic & Science
Haloacedic Acid A	Academic & Science
Haloacetic Acid And	Academic & Science
Magyar Csillagászati Egyesület	Academic & Science
Magyar Csillag?zati Egyes?et	Academic & Science
Hasvik	Airport Code
Home Automation Association	Business
Haloacetic Acid	Chemistry
Histiocytosis Association of America	Community
Hinsdale Adventist Academy	Community
Hospice Association of America	Community
Hispanics Across America	Community
Harvard Athletic Associaton	Community
Houston Apartment Association	Community
Haunted Attraction Association	Community
Havyaka Association of Americas	Community
History of Art and Architecture	Community
Houston Apartment Association's	Community
Historic Action Adventure	Computing
Horror Action Adventure	Computing
Hsanz Anzsbt Asth	General
Houston Apartment	General
Hamilton Anderson Associates	General
Heterocyclic Aromatic Amines	General
Helicopter Alighting Area	General
Alif Atoll	General
Hungry After All	General
Historically Accurate Appearances	General
Hill Ascent Assist	General
Honda Access Asia	General
Hormonally Active Agent	General
Honda Access America	General
Historic Auto Attractions	General
Headrests Adjustable on All Seats	General
Height Above Airport	Governmental
Heavy Anti Archiver	Governmental
Houston Arts Alliance	Governmental
Home Acoustics Alliance	Governmental
HARWADA	Indian Railway Station
Hepatitis- Associated Antigen	Medical
Hepatitis Associated Antibodies	Medical
Health Action Area	Medical
Hospital Activity Analysis	Medical
Hepatitis-Associated Antibody	Medical
Heavy Anti-aircraft	Military and Defence
Hasvik, Norway	Regional
HAN: a language of the United States	Regional
Hepatitis Australian Antigen	Regional
Heure Avancée de l'Atlantique	Regional
Heure Avanc? de l'Atlantique	Regional
High Altitude Airship	Space Science
High Altitude Abort	Space Science
Hampton Athletic Association	Sports