Look up at the night sky with the naked eye and it may seem like it rarely changes. Yet the universe is in constant flux.

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the northern hemisphere).

In a captivating exploration of the Andromeda galaxy, new images have shed light on how this vast cosmic neighbor truly ...

The meteors, or shooting stars, are the trail of dust left behind by the famous comet Halley. The peak will be on the night of October 21/22, when around 20 meteors per hour might be seen. The second ...

ON October evenings the autumn constellations are at their best. The Plough is now at its lowest in the north, although still reasonably high in the sky. Cassiopeia is now very high and not far from ...

Chapter 7: | 7-2 Beyond the Galaxy7-2-1 The Lifespan and Replication of GalaxiesHere, a concern arises. It is predicted that ...

Will the Milky Way and Andromeda galaxies collide in several billion years? The odds have changed with a new study using ...

The Milky Way and Andromeda are already colliding in slow motion—here's what happens when two galaxies merge and what it means for Earth's future.

October is such a wonderful time of year for stargazing over Butler. Nights are longer and offer great constellations, ...

It is jarring to realize that the same beautiful, tranquil October skies we see today served as the canvas upon which the ancients projected tales of monstrous creatures, savage violence and gods ...

The Sombrero Galaxy (Messier 104) contains a supermassive black hole within an immense central bulge of stars. Around its ...

NASA announced Wednesday a mission to explore the history and evolution of the universe, PRIMA (PRobe far-Infrared Mission ...