Isn’t to detect different frequencies it’s a matter of varying the distance between the detectors? Space based detectors can be placed arbitrary close or far,

Isn’t to detect different frequencies it’s a matter of varying the distance between the detectors? Space based detectors can be placed arbitrary close or far, moved at will. Ground based is fixed. Also I remember isolation from Earth’s vibration was a huge if not the biggest engineering challenge. There’s no such problem in space.