New details have been discovered about M87*, the first black hole ever photographed, revealing its plasma, its brightness and ...

Unusual detection bolsters evidence that the mysterious signals can be caused by different astrophysical events.

The Triangulum Galaxy, also informally known as the Pinwheel Galaxy, is a spiral galaxy 2.7 million light-years from Earth ...

A dead galaxy, over 11 billion years old, has surprised astronomers with powerful radio bursts. Once thought to be lifeless, ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

The NASA/ESA/CSA James Webb Space Telescope has captured and amazing view of the Sombrero Galaxy (Messier 104). The galaxy is ...

Astronomers say they've detected a mysterious type of signal known as a fast radio burst coming from an ancient, dead galaxy.

Scientists used changes in the supermassive black hole M87*'s accretion disk to infer its orientation, size and turbulence ...

The first image of M87* — and humanity's first image of any black hole, for that matter — was taken by the EHT in 2017 and released to the public in 2019. It was notable for its bright golden ring, ...

Messier was interested in comets ... Galaxies come in a very wide range of sizes and masses. Measuring a galaxy’s brightness or apparent size is not a good guide to its distance.

Messier was interested in comets ... Galaxies come in a very wide range of sizes and masses. Measuring a galaxy’s brightness or apparent size is not a good guide to its distance. Hubble leveraged a ...