Andromeda XXXV is only about 20,000 times more massive than our Sun—very small, even for a satellite galaxy. For comparison, ...

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 ...

DESI, which will be scanning the sky for five more years, is expected to observe around 40 million galaxies and quasars ...

Instead of these large, hulking early galaxies that Webb observed, scientists expected there to be smaller and younger types of galaxies for that particular time period. Of course, this wouldn’t ...

Satellites come in all shapes and sizes, but there aren't any that look quite like SPHEREx, an infrared observatory NASA ...

Astronomers now know that galaxies are isolated systems of ... about 2.5 million light years – by not realizing there were two different types of Cepheid variables. His measurements marked ...

It's a particular type of rare galaxy called a luminous ... galaxies and they don't find SMBHs at the heart of dwarf galaxies. There's an established link between SMBHs and their host galaxies ...

"For example, is there any relationship between the mechanisms of black hole formation and the types of galaxies they inhabit?" Pucha said. "Our wealth of new candidates will help us delve deeper ...