"You'd see this structured—almost like a patch—grey-toned or white toned-emission connected to the aurora," said researcher Emma Spanswick.

The mystery of a strange, milky-white streak of light that sometimes peeks out from the northern lights have finally been solved. This light, formally named a "structured continuum emission", may ...

A black hole infamous for strange features has once again baffled astronomers, this time with rapid X-ray flashes. What could they be?