Sagittarius Dwarf Galaxy
A Dwarf Galaxy Passed Close to the Milky Way and Left Ripples in its Wake
An ancient collison with the Milky Way is still causing ripples in our galaxy according to Gaia data.
A Detailed Scan of the Milky Way Finds Possible “Fossil” Spiral Arms
New research has revealed previously unknown wispy structures in the Milky Way disk that could offer clues about the history…
Gaia has Already Given Us 5 New Insights Into the Milky Way
The European Space Agency launched the Gaia mission in 2013. The mission's overall goal was to discover the history of…
The Solar System Might Not Exist if There Wasn’t a Huge Galactic Collision with the Milky Way Billions of Years Ago
The Milky Way has a number of satellite galaxies; nearly 60 of them, depedending on how we define them. One…
The Disk of the Milky Way is Warped Because it Already Collided With Another Galaxy
Using data from the second Gaia data release, a team of astronomers has demonstrated that the "warp" in our galaxy…
The Milky Way is Still Rippling from a Galactic Collision Millions of Years Ago
Between 300 million and 900 million years ago, our Milky Way galaxy nearly collided with the Sagittarius dwarf galaxy. Data…
Messier 54 – the NGC 6715 Globular Cluster
Located in the Sagittarius Dwarf Galaxy, some 87,000 light years from Earth, is the globular star cluster known as Messier…
Stars at the Edge of our Galaxy May Have Been Stolen
A new study produced by astronomers from Harvard-Smithsonian Center for Astrophysics shows how some of the most distant stars in…
What is the Closest Galaxy to the Milky Way?
Located just 25,000 light years from our Solar System is the Canis Major Dwarf Galaxy, the closest galaxy to the…
Sagittarius Dwarf Galaxy – A Beast With Four Tails?
[/caption] Galactic interactions can have big effects on the shapes of the disks of galaxies. So what happens when a…