Keeping in mind that one light year is equal to about 6 trillion miles, the spiral disk of stars that is our Milky Way Galaxy spans 100,000 light years in diameter. The thickness of that disk, though, ...

Astronomers have at last identified what's believed to be the edge of the Milky Way galaxy. A team of astronomers from England used that farthest point to determine that the diameter of the Milky Way ...

This image provided by the European Space Agency ESA, is Gaia’s all-sky view of our Milky Way Galaxy and neighboring galaxies, based on measurements of nearly 1.7 billion stars. The map shows the ...

"The discovery of this stream highlights how much is still unknown about the life histories of galaxies, how the hidden ...

For the first time, scientists have built a digital version of the Milky Way that follows the motion of individual stars, not ...

We often think of our home galaxy, the Milky Way, as being a self-contained collection of stars, planets, gas and dust. Sure, it's going to slam straight into the neighboring Andromeda galaxy at some ...

The current rate of star formation at the Galactic Center appears to be lower than in the rest of the Galaxy. A new study led ...

Computer simulations and observations of nearby galaxies helped astrophysicists determine that the Milky Way stretches nearly 2 million light-years across, Ken Croswell reported in “Astronomers find ...