ETR meaning in Space Science ?

Answer:

What is Eastern Test Range mean?

The Eastern Range (ER) is an American rocket range (Spaceport) that supports missile and rocket launches from the two major launch heads located at Cape Canaveral Space Force Station and the Kennedy Space Center (KSC), Florida.: 5 The range has also supported Ariane launches from the Guiana Space Centre as well as launches from the Wallops Flight Facility and other lead ranges.: 7 The range also uses instrumentation operated by NASA at Wallops and KSC.: 12 

The range can support launches between 37° and 114° azimuth. The headquarters of the range is now the 45th Space Wing at Patrick Space Force Base.: 1 

reference

Full Form	Category
Existing To Remain	Academic & Science
Electronic Temporary Registration	Academic & Science
Electronic Timer and Remote	Academic & Science
Extra Testing Rule	Academic & Science
Electronic Title and Registration	Academic & Science
Electronic Training Request	Academic & Science
Electronic Trade Reference	Academic & Science
Electronic Title Registration	Academic & Science
Enterprise Technology Research	Academic & Science
Electronic Tandem Resources	Academic & Science
Engineering Technical Reviews	Academic & Science
Evaporator Temperature Regulator	Business
Electric Tool Repair	Business
Exchange On Tax Rulings	Business
Entergy Corporation	Business
Educational Technology Resources	Community
Elkton Town Resident	Community
ETSI Technical Report	Computer and Networking
Estimated Time To Repair	Computer Hardware
Estimated Time of Recovery	Computing
External Throughput Rate	Computing
External Time Reference	Computing
Educate Test Reward	General
Early to Rise	General
Evaluation Team Report	General
Excessive Transverse Ridge	General
Elettro Treno Rapido	General
Elettero Treno Rapido	General
Eastern Tandem Rally	General
Exchange Trade Report	General
Electronically Tuned Receiver	General
Early Token Release	General
Expenditure Transfer Request	General
East Texas Radiator	General
Estimated Time of Readiness	General
Employer Tuition Reimbursement	General
Endogenous Tissue Restoration	General
Enjoy The Ride	General
Emerging Talent Rotational	General
Equipment Trouble Report	General
Element Test Review	General
Establish The Run	General
Enhanced Tear Resistance	General
Eletronic Tuning Radio	General
Est Time of Restoration	General
Earn The Right	General
Electronically Tuned Radio	General
Emergency Tensioning Retractor	General
Emergency Trunk Release	General
Engine Test Request	General
Elantra Touring	General
Electronic National Tuberculosis Registry	Governmental
Environmental Testing and Research	Governmental
Express Toll Route	Governmental
Employee Turnover Rate	Governmental
Effective Tax Rate	Income Tax
ELATTUR	Indian Railway Station
Estimated Time of Restoration	Internet
Estimated Time to Response	Internet
Etravirine	Medical
Estimated Time of Return	Military and Defence
Embedded Training Requirements	Military and Defence
Export Traffic Release	Military and Defence
European Tamil Radio	Regional
European Trainees Residence	Regional
Essex Terminal	Regional
Eastern Test Range	Space Science