When astronomers first started finding “odd radio circles,” or ORCs, they were baffled. These faint, ghostly rings of radio light seemed to float in deep space, surrounding galaxies like cosmic smoke ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star, dubbed M31-V1, was key to showing that the universe extended far beyond ...

Abstract: This paper provides a significant improvement to the coaxial-line equation that is used for analytical estimation of via capacitance in multilayered printed circuit boards (PCBs) Previously, ...

The finding offers tantalizing clues in the ongoing quest to piece together the origins of ORCs—mysterious, ring-shaped radio signals from space.