What does HEAO-1 stand for?

HEAO-1 stands for "NASA X-Ray Astronomy Mission"

How to abbreviate "NASA X-Ray Astronomy Mission"?

"NASA X-Ray Astronomy Mission" can be abbreviated as HEAO-1

What is the meaning of HEAO-1 abbreviation?

The meaning of HEAO-1 abbreviation is "NASA X-Ray Astronomy Mission"

What does HEAO-1 mean?

HEAO-1 as abbreviation means "NASA X-Ray Astronomy Mission"