ESA’s decade-long Milky Way Gaia mapping mission still has tons of data to release over the next few years. Expect surprises.

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

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

Our modern era of space observation and exploration deepens our connection with the universe—and with each other. When NASA ...

What does matter is that we’re a part.” While most of us go about our days, immersed in the minutia our lives, we remain very ...

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

Somewhere in between, humans realized the universe is much larger than our Milky Way — that the spiral nebulas visible through telescopes were, in fact, other galaxies in their own right.

The Hubble Space Telescope has provided the most detailed survey of the Andromeda galaxy, revealing new clues about its ...

The research team said these rings likely formed when a smaller galaxy shot through the heart of the Bullseye galaxy roughly ...