The European Space Agency's Gaia mission has transformed how astronomers study the Milky Way. Its extraordinary measurements ...

A Spanish-led team dated stars with Gaia and found the galactic disk formed in two stages, a puffy turbulent one and then a ...

Our Solar System occupies a particular location within the Milky Way, in the region commonly known as the Orion Arm.

Uncover how Gaia data reveals the Milky Way's two-stage disk formation, explaining why its oldest stars formed in a thicker, ...

The Milky Way is home to hundreds of billions of stars arranged in a glorious spiral pattern. But beyond the obvious spiral, ...

ED138 is currently about 46 times farther from the sun than Earth. Scientists say it is among the largest objects discovered ...

If there is no bright, glowing gas around a black hole, how can we tell where it is? The clue lies in the movement of stars ...

To be considered a dwarf planet, an object needs to be massive enough to form a round shape under its own gravity. ED138’s ...

"The Sagittarius stream gives us an opportunity to recover part of the original galaxy's structure and compare it with present-day dwarf galaxies," said Prof. ZHAO Gang of NAOC, a co-corresponding ...

With 8,291 TNOs in JPL’s catalog, recent discoveries and new telescope technology are revealing more of the solar system’s ...

A collision between two stars may explain why planet-forming disks in the Orion Nebula appear much younger than the stars ...

A new survey of the Virgo cluster has more than doubled the number of galaxies in this system. The new objects are extremely ...