ALT meaning in Space Science ?

Answer: What is Altitude mean?

Altitude or height (also sometimes known as depth) is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and reference datum varies according to the context (e.g., aviation, geometry, geographical survey, sport, or atmospheric pressure). Although the term altitude is commonly used to mean the height above sea level of a location, in geography the term elevation is often preferred for this usage.

Vertical distance measurements in the "down" direction are commonly referred to as depth.

reference

Full Form	Category
Achievement Level Tests	Academic & Science
Arts Lecture Theatre	Academic & Science
Alenquer	Airport Code
Alternative	Banking
Allegheny Teledyne, Inc. (delisted)	Business
Association Leadership Team	Business
Analytica, Liimited	Business
Association for Linguistic Typology	Community
Advanced Learning Technologies	Community
Automatic Link Transfer	Computer and Networking
Assembly Line Type	Computer Assembly Language
Application Load Table	Computing
Algorithmic Learning Theory	Computing
Advanced Logic Technology	Computing
Automated Loop Test	Computing
Adaptive Lighting Technology	Computing
Analogue Loopback Transfer	Computing
Alt Linux Team	Computing
Alitas	Cryptocurrency
AltCrusaders	Cryptocurrency
AltCoin	Cryptocurrency
Alt.Estate token	Cryptocurrency
Alternating	Electronics
Wordperfect Library Menu File	File Type
Anti Labour Technican	General
Arte Lavoro Territorio	General
Angelic Light Transmissions	General
Alternative Method	General
Accelerated Life Testing	General
Aveo Lt	General
Assistant Language Teacher	Jobs
Alternative Lengthening of Telomeres	Medical
Abundant Larval Transcript	Medical
Argon Laser Trabeculoplasty	Medical
Alanine Transaminase	Medical
Amino Alanine Transferase	Medical
Atypical lipomatous tumours	Medical
Anterolateral Thigh	Medical
Acquisition, Logistics, and Technology	Military and Defence
Active Leap Technology	Military and Defence
Administrative Lead Time	Military and Defence
Anarchists, Lunatics, and Terrorists	Military and Defence
Airlake Terminal Railway	Regional
Alternate Key	Softwares
Altimeter	Space Science
Altitude	Space Science
Approach and Landing Test	Space Science
Alternate	Space Science
Association for Learning Technology	Technology