Abbreviations

This is a list of the most frequently used abbreviations. Arranged alphabetically.

For the most frequently asked questions, go here.

AFK	Away from keyboard
ASOG	A Shortfall of Gravitas	One of SpaceX's drone ships, the newest of the fleet.
AU	Aurum / gold, or AUricle; our moderator
BRB	Be right back
BN	Booster Number	Used to identify a particular Super Heavy booster
CH4	Methane
COPV	Composite Overwrapped Pressure Vessel
Cryo	Cryogentic testing
Cya	See ya
DM	Direct message	Usually using discord
F9	Faclon 9	SpaceX's primary medium-lift rocket
FH	Falcon Heavy	The heavy-lift varient of Falcon 9
GM	Good morning
GN	Good night
GSE	Ground Support Equipment
GTG	Got to go
HB	High Bay
HE	Helium
JRTI	Just Read The Instructions	One of SpaceX's drone ships
KSP	Kerbal Space Program
LEO	Low Earth Orbit
LN2	Liquid Nitrogen
LOX	Liquid Oxygen
MB	Mid Bay
MS	Mass Simulator
NOTAM	Notice to Airmen
NP	No Problem
OCISLY	Of Course I Still Love You	One of SpaceX's drone ships
OLP	Orbital Launch Pad
QD	Quick Disconnect
RUD	Rapid Unscheduled Disassembly	An event that happens very quickly resulting in something being destroyed without warning (also referred to as 'anomaly', or more to the point: 'an explosion')
RSN	Raptor Serial Number	Used to identify a particular Raptor Engine
RP-1	Rocket Propellant-1	A refined grade of Kerosene used as fuel for some rockets, like Falcon 9
SF	Static Fire
SH	Super Heavy
SHB	Super High Bay	This abbreviation is out of use now
SL	Starlink
SN	Serial Number	Used to identify a particular StarShip (or Raptor Engine)
SPI	South Padre Island
SS	StarShip
SSTO	Single Stage to Orbit
TFR	Temporary Flight Restriction
TS1	Test Stand 1	Named "Suborbital Pad A" by SpaceX
TS2	Test Stand 2	Named "Suborbital Pad B" by SpaceX
WDK	We don't know
WDR	Wet Dress Rehearsal
YT	YouTube
YW	You're welcome