When astronomers first started finding “odd radio circles,” or ORCs, they were baffled. These faint, ghostly rings of radio ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

With the help of citizen scientists, astronomers have discovered a rare pair of "Odd Radio Circles" overlapping in space.

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

In new research published in Science, a team of astronomers report the detection of a surprising substance in a brown dwarf ...

Astronomers discover the most distant and powerful odd radio circle, reshaping theories about cosmic structures.s ...