Sagittarius A* as seen through the Event Horizon Telescope. Credit: ESO/José Francisco Salgado, EHT Collaboration With respect to structure, there are three types of galaxies: spiral, elliptical ...

Looking for a really big story, I naturally headed for "Galaxies in Collision." Bradley Whitmore of the Space Telescope Science Institute in Baltimore brought us up to speed. We've known for a ...

Enjoy dark skies for evening observing, then catch a meteor shower and a planetary conjunction in the morning sky this week.

Yet it does something galactic researchers only thought possible in much more massive elliptical galaxies ... called Sagittarius A*, is much smaller and currently dormant, it could (one far-off day) ...

Rosemary F. G. Wyse of Johns Hopkins University reported on our space invader, the dwarf galaxy known as Sagittarius. Three astronomers had been studying small squares of sky, measuring the motion ...

Our own Milky Way has a 4 million solar mass black hole – Sagittarius A (Sgr A*) – at its centre, but this is currently in an extremely quiet and dormant state. That could change if a gas cloud, star, ...

By analyzing the available observational data, astronomers from the Tribhuvan University in Nepal and elsewhere have ...

Astronomers using W. M. Keck Observatory on Maunakea, Hawaiʻi Island have found compelling evidence of a dark matter-deficient dwarf galaxy, FCC 224. This ultra-diffuse galaxy is located on the ...

Astronomers are applying new image-processing techniques to previously released Hubble observations in honor of the space ...

Using the Hubble Space Telescope, astronomers have made the first direct observation of star clusters colliding and merging at the hearts of dwarf galaxies. The discovery could help scientists ...

"This discovery upends conventional wisdom, as such powerful jets are almost exclusively found in elliptical galaxies, not spirals," Suraj Dhiwar, a researcher at the Inter-University Centre for ...