Radio Astronomy Episode 16, Radio Stars and Early Interferometers Episode 16, Radio Stars and Early Interferometers.

Streaming video - 2017

When radio astronomers discovered a sky full of small radio sources of unknown origin, they built telescopes using multiple antennas to try to understand them. Learn how and why interferometers were developed and how they have helped astronomers study quasars - those bright, star-like objects that scientists now know only occur in galaxies whose gas is falling into a supermassive black hole.