Strangely light galaxies could imply new model for dark matter

Most of the mass in any given galaxy is invisible, made up of stuff we call dark matter. But in recent years astronomers made the puzzling discovery of two bizarre galaxies with almost no dark matter. Now, a new study has suggested an explanation for t… Continue reading Strangely light galaxies could imply new model for dark matter

Exotic objects made of dark energy could be pushing the universe apart

The universe is expanding, and that expansion is accelerating, but exactly why and how that’s happening remains unknown. One hypothesis suggests that this expansion is driven by mysterious, black hole-like objects made of dark energy, and now astrophys… Continue reading Exotic objects made of dark energy could be pushing the universe apart

Andromeda’s “halo” already bumping into Milky Way’s ahead of collision

There’s more to galaxies than meets the eye, and now astronomers have mapped out a huge invisible region of the galaxy next door. Observations by the Hubble Space Telescope have detailed the size and structure of the gas halo of Andromeda – and found t… Continue reading Andromeda’s “halo” already bumping into Milky Way’s ahead of collision

Advanced galaxy far, far away raises questions about cosmic evolution

Astronomers have spotted a galaxy with a structure similar to the Milky Way. That’s not particularly surprising in itself – our home galaxy is quite run-of-the-mill – but the weird thing is that this one is 12 billion light-years away, meaning it’s ver… Continue reading Advanced galaxy far, far away raises questions about cosmic evolution

Comprehensive 3D map of the universe fills 11-billion-year gap

A 20-year study of the night sky has allowed astronomers to produce a comprehensive 3D map of the universe, covering 11 billion years of expansion. A new analysis of this map has highlighted a mismatch in the Hubble Constant, and revealed when the expa… Continue reading Comprehensive 3D map of the universe fills 11-billion-year gap

Milky Way photography competition contrasts cosmic and Earthly beauty

The night sky is a beautiful canvas for photography, and the Milky Way is the star (pun intended) of the show. Travel photography blog Capture the Atlas has now published the latest edition of its annual Milky Way Photographer of the Year list, featuri… Continue reading Milky Way photography competition contrasts cosmic and Earthly beauty

Gamma ray patterns hint at galaxies with two supermassive black holes

Astronomers investigating gamma ray emissions have discovered that certain active galaxies seem to be giving off bursts in regular patterns. This, the team says, could be an indication of galaxies harboring two supermassive black holes in their centers… Continue reading Gamma ray patterns hint at galaxies with two supermassive black holes

Stunning X-ray image delivers a deep dive into the Milky Way

A newly released map shows our home galaxy in a new light. The eROSITA telescope has scanned the entire sky in X-rays, painting a colorful portrait that reveals large-scale structures and hundreds of thousands of previously unknown X-ray sources.Contin… Continue reading Stunning X-ray image delivers a deep dive into the Milky Way

Avoiding violent neighbors key to planet formation in star clusters

According to the results of a new study, stars orbiting near the centers of massive clusters have a much harder time forming planets than those located at the edge. The discovery was made possible by the powerful viewing capabilities of the Hubble Spac… Continue reading Avoiding violent neighbors key to planet formation in star clusters

“Cosmic ring of fire” tells tale of ancient intergalactic collision

Astronomers have discovered a “cosmic ring of fire” – a galaxy shaped like a gigantic donut. This type of galaxy is extremely rare, especially for its age, and it was likely caused by a collision with a smaller galaxy that can still be seen lingering n… Continue reading “Cosmic ring of fire” tells tale of ancient intergalactic collision