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Subject
- radio spectra1
- radio spectrographs1
- radio spectrometers1
- radio spectroscopy1
- radio telescopes1
- space astronomy1
- space observatories1
- space telescopes1
- star-forming regions1
- stellar-spectral-types1
- telescope arrays1
- uv1
- very large array1
- very long baseline interferometers1
- very long baseline interferometry1
- vla1
- vlbi1
- wise all-sky infrared1
- x-ray-sources1