Galaxy Collision
Are Andromeda and the Milky Way Already Exchanging Stars?
I often drag out the amazing fact that the Andromeda Galaxy, that faint fuzzy blob just off the corner of…
The Milky Way’s Stellar Halo Isn’t a Sphere After All
Our galaxy's stellar halo is giving astronomers some new food for thought. It turns out everyone thought the halo was…
When Galaxies Collide, Black Holes Don’t Always Get the Feast They Were Hoping for
What happens when galaxies collide? Well, if any humans are around in about a billion years, they might find out.…
Ancient Impacts Shaped the Structure of the Milky Way
According to a new study using data from the SDSS, ripples in the Milky Way's disk may be indications of…
Astronomy Cast Ep. 407: Galactic Cannibalism
Last week we talked about stars feasting on other stars. This week, we scale the whole process up a notch,…
Galactic Gong – Milky Way Struck and Still Ringing After 100 Million Years
When galaxies collide, stars are thrown from orbits, spiral arms are stretched and twisted, and now scientists say galaxies ring…
Milky Way Arm Wrestles With Dark Matter
[/caption] For a good number of years, astronomers have hypothesized the Sagittarius Dwarf Galaxy has been loaded up with dark…