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 ...

Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

In the heart of our Milky Way galaxy, two gigantic "bubbles" extend roughly 50,000 light-years above and below the galactic ...

Hypervelocity stars (HVSs) were first theorized to exist in the late 1980s. In 2005, the first discoveries were confirmed.

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

So how well do you know the Milky Way? Let's test your knowledge of our galaxy's size, age, speed and more with the 15 ...

New research from the SAGA Survey, comparing the Milky Way with 101 similar galaxies, unveils how our galaxy differs ...

A star system has been discovered to be moving at an estimated 1.2 million miles per hour, making it possibly the fastest moving solar system in our galaxy.

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

It can be seen with the naked eye on a very clear autumn night as a faint cigar-shaped ... was actually very far outside our own Milky Way galaxy -- at a distance of approximately 2.5 million ...

Astro Tourism is the travel trend you didn’t know you needed. As 6 planets align in February 2025, here are best spots to watch the rare event in Saudi Arabia.

These glass plates recorded images of the night sky using a light ... were all moving away from the Milky Way. Hubble’s results suggested the farther away a galaxy was, the faster it was moving ...