O meaning in Space Science ?

Answer: What is Omicron mean?

Omicron (uppercase Ο, lowercase ο, literally 'small o': όμικρον < ὂ μικρόν - ò mikrón, micron meaning 'small' in contrast to omega) is the 15th letter of the Greek alphabet. In the system of Greek numerals it has a value of 70. This letter is derived from the Phoenician letter ayin . In classical Greek, omicron represented the sound [o] in contrast to omega [ɔː] and ου [oː]. In modern Greek, omicron represents the mid back rounded vowel /o̞/ , the same sound as omega. Letters that arose from omicron include Roman O and Cyrillic O.

reference

Full Form	Category
Ovangkol	Academic & Science
Oblivion	Academic & Science
Outcome	Academic & Science
Occult	Academic & Science
Odds	Academic & Science
Odin	Academic & Science
octet	Academic & Science
Organism	Academic & Science
Outrageous	Academic & Science
Over	Accounts and Finance
Realty Income Corporation	Business
Old	Business
Oluolu	Business
Outreach	Business
Offer	Business
Oxygen	Chemistry
Odor	Chemistry
Oldest	Community
Optimism	Community
Oprah	Community
Orchestra	Community
Overs	Community
Oldenburg	Community
Offset	Community
UNIX Object file	Computing
Object	Computing
Outdoors	Country Specific
Oasis	Country Specific
Ottawa	Country Specific
Operating	Electronics
Off	Electronics
Form O Solenoid (actuator Only, No Contacts)	Electronics
Object File ( Unix - Atari - Gcc)	File Type
Outpouring	General
Ola	General
New Orleans, Louisiana (mint mark on US coins)	General
Others	General
Orange	General
Originality	General
Often	General
Ossie	General
Observed	General
Octopus	General
Overdistance	General
Oatmeal	General
Owner	General
Owen	General
Original	General
Oddity	General
Ordinary	General
Only	General
Oliver	General
Onions	General
Of	General
One	General
Optimization	General
Overcooked	General
Oakland	Governmental
Obedient	Governmental
Official	Governmental
Obedience	Governmental
Outstanding	Governmental
Omaha	Governmental
Overt	Governmental
Oberst	Governmental
Omologato	International
Osten	International
Ordentlich	International
Oben	International
Ost	International
Oplegger	International
Oriundo	International
Omni	International
Hug	Internet
Opportunities	Jobs
Odd	Maths
Octant	Maths
Obliqueness	Maths
Occipito	Medical
Ostrich	Medical
Obvious	Medical
Ongoing	Medical
Overall impression	Medical
Onset	Medical
Occlude	Medical
Outcomes	Medical
Opening	Medical
Pyrrolysine	Medical
Oh	Messaging
Contour Pattern	Military and Defence
Objectives	Military and Defence
Officer	Military and Defence
Online	Networking
Output	Networking
Ohm	Physics Related
Out	Space Science
Oort	Space Science
Omicron	Space Science
Outdoor	Sports
Olympics	Sports
Ownership	Stock Exchange
Operator	Telecommunication