A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...

CINCINNATI (WKRC) - Scientists reportedly spotted a comet the size of Manhattan flying through the Milky Way galaxy, marking the third time an object from outside the galaxy has been spotted in the ...

A long-term survey of small, “satellite” galaxies that orbit larger galaxies across the universe offers new insights into our own galaxy, the Milky Way. Since 2012, the Satellites Around Galactic ...

At left, a wide view of the Dragonfly 44 galaxy, and at right, a close-up of the same image, revealing its large, elongated shape and halo of spherical clusters of stars around its core, similar to ...

A mosaic of the images of 378 satellites across 101 Milky Way-like systems that the SAGA team has surveyed. The satellite images are sorted by their luminosity from left to right. Is our home galaxy, ...