Radio astronomers see what the naked eye can’t. As we study the sky with telescopes that record radio signals rather than light, we end up seeing a lot of circles. Radio astronomers see what the naked eye can’t. As we study the sky with telescopes that record radio signals rather than light, we end up seeing a lot of circles. Astronomy Phys.org – latest science and technology news stories
‘Ghosts of the radio universe’: Astronomers have discovered a slew of faint circular objects
