Many Pennsylvania residents looked up at the sky Tuesday in hopes of catching the Perseid meteor shower, but instead, saw something rather strange — a spiral-shaped light. Viewers like Robyn Gneiss ...

A mysterious white spiral appeared over central Pennsylvania on Tuesday night. Viewers flooded the abc27 News phone lines ...

The day before my thesis examination, my friend and radio astronomer Joe Callingham showed me an image we'd been awaiting for ...

Like the spiral shapes themselves, they are thought to be the product of density waves, in this case radiating out from the galactic center rather than circling around it.

This has a side effect of suppressing star formation in the galaxy. That does not describe J0742+2704, which has maintained its spiral shape, supporting alternative mechanisms of jet formation.

From Massachusetts to Maryland, sky watchers reported seeing what looked like an alien spacecraft overhead Tuesday night.No need for alarm — the strange light is likely the result of one of several ...

How to Shape a Spiral GalaxyOur Milky Way galaxy has an elegant spiral shape with long arms filled with stars, but exactly how it took this form has long puzzled scientists. New observations of ...

Through these mergers, spiral galaxies turn into elliptical galaxies, egg-shaped galaxies without the spiral arms, which leads to the growth of supermassive black holes.

Extraterrestrial aliens have been given as an unscientific explanation for a variety of engineering marvels, including the Egyptian pyramids, Easter Island statues and Stonehenge. Little green men wit ...