After more than a decade of charting the stars with extraordinary precision, the Gaia spacecraft has completed its mission.

We've known for over 30 years that there are other stellar systems in our galaxy, but we don't have any idea how many there ...

The Small Magellanic Cloud, a dwarf galaxy about 200,000 light-years from the solar system, can be seen with the naked eye ...

A century ago, Edwin Hubble revolutionized our understanding of the universe by proving that the Milky Way is just one of many galaxies in an ever-expanding cosmos. This breakthrough led to the ...

Scientists have spotted a defiant galaxy. Located nearly 1 billion light-years from Earth, the galaxy 2MASX J23453268−0449256 ...

The CMZ is a region of clouds rich in dust and molecular gas that roils around the galactic nucleus. It measures up to 2,000 ...

ESA shuts down Gaia spacecraft after more than a decade, leaving behind the most detailed legacy that will guide future ...

In January, the European Space Agency (ESA) shut down Gaia's science operations, as the spacecraft's fuel reserves were ...

Europe's Gaia space telescope was powered down and sent into "retirement" on Thursday after a decade revealing the secrets of ...

Astronomers have uncovered a spiral galaxy nearly a billion light-years away that hosts a supermassive black hole launching ...

The final messages sent to Gaia will continue to be carried out into space as the observatory sleeps, and as data from it ...