The Bullseye galaxy earned its nickname thanks to its wild number of rings. A smaller galaxy shot through its heart 50 ...

Giant radio galaxies (GRGs) are massive, with plasma jets powered by supermassive black holes at their centers, stretching ...

In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...

Space is already filled with plenty of mysteries, and black holes may be among the strangest. Here are some of the questions ...

Exoplanets have captured the imagination of public and scientists alike and, as the search continues for more, researchers ...

A trio of astronomers from the University of Tokyo and Niigata University have found what they describe as "peculiar embedded ...

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

The James Webb Space Telescope (JWST) continues to transform our understanding of the universe. By combining its advanced ...

Astronomers have discovered two strange objects that could be young stars — except they're completely surrounded by ice.

Shapley's goal was to measure the size of the Milky Way — and hence the universe as he saw it — by creating the first official cosmic distance ladder. Cepheid variables that he identified in ...

A century ago, Edwin Hubble first established that this so-called 'spiral nebula' was actually very far outside our own Milky Way galaxy -- at a distance of approximately 2.5 million light-years ...