What does SIS stand for?
SIS stands for "Solar Interplanetary Satellite"
How to abbreviate "Solar Interplanetary Satellite"?
"Solar Interplanetary Satellite" can be abbreviated as SIS
What is the meaning of SIS abbreviation?
The meaning of SIS abbreviation is "Solar Interplanetary Satellite"
What does SIS mean?
SIS as abbreviation means "Solar Interplanetary Satellite"
