In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it ...

Astronomers have constructed the first detailed 3D map of the properties of cosmic dust in our home galaxy. For their map, the astronomers used 130 million spectra from ESA's Gaia mission, results ...

In 1610, astronomer Galileo Galilei used the newly invented telescope to show that the Milky Way was composed of ... of very faint objects, and its high-quality mirror allowed it to distinguish ...

Astronomers have discovered strong evidence for the closest supermassive black hole outside of the Milky Way galaxy. This ...

Sagittarius A* is the supermassive black hole at the center of our home Milky Way galaxy. It has a mass equal to billions of suns and has an accretion disk made up of gas and dust surrounding it.

going at ridiculously high speeds. It's as if the black hole basically hurled it out of the galaxy. Han and his colleagues ...

In the ongoing quest to understand dark matter, researchers are now wondering if a strange phenomenon occurring at the heart of the Milky Way galaxy could be from a different form of dark matter. Dark ...

The black hole at the heart of our galaxy is a real party animal ... Space Telescope (JWST), scientists discovered that the Milky Way's central supermassive black hole, Sagittarius A* (Sgr ...

The object is twice the width of the Milky Way galaxy and offers a rare glimpse of an ancient cosmic structure, which was formed when the universe was less than 10% of its current age of 13.8 ...

Astronomers have observed a flare of light near Sagittarius A, the supermassive black hole at the centre of the Milky Way galaxy ... hole collide and release high-energy particles, moving close ...

In 2011, a project that surveyed the Milky Way galaxy for exoplanets — which are ... or so to see if it's traveling on its expected, high-speed trajectory. If the star continued zooming through ...