Distances to various objects are calculated using (*) VLBI, a form of interferometry using telescopes that operate in this region of the spectrum.
In 2006, a facility utilizing a technique in this region of the EM-spectrum found the most massive neutron star ever discovered. The world's largest fully steerable telescope operating in this region of the spectrum is surrounded by a notable "Quiet Zone" and can be found in Green Bank. Distances to various objects are calculated using (*) VLBI, a form of interferometry using telescopes that operate in this region of the spectrum. The Very Large Array is an observatory in New Mexico that performs a technique in this region of the spectrum that was recently renamed after that technique's pioneering practitioner, Karl Jansky. For 10 points, name this region of the electromagnetic spectrum utilized by telescopes that detect wavelengths longer than microwaves.
In 2006, a facility utilizing a technique in this region of the EM-spectrum found the most massive neutron star ever discovered.
radio waves [accept radio telescopy or radio interferometry] 