How heavy is our Galaxy?
How can the orbits of satellite galaxies be used to pin down the mass of the Milky Way?
The speeding binary that shouldn’t exist
A mysterious pair of stars speeding through the outskirts of our galaxy together puzzles astronomers
Satellite Galaxies All in a Row—How So?
Many satellite galaxies in the local universe are orbiting their parent galaxies in highly coherent planes—yet such structures are vanishingly rare in simulations. What gives?
Meet the AAS Keynote Speakers: Evan Kirby
Dwarf galaxies: small blobs of dark matter (and stars and gas), or time traveling machines for studying chemical evolution? Professor Evan Kirby’s upcoming #AAS232 talk will tell you more.
Meet the AAS Keynote Speakers: Gurtina Besla
The recent Gaia data release is revolutionizing the way we understand our Milky Way and the galaxies around it. Come to Professor Gurtina Besla’s #AAS232 talk to find out more about the cutting-edge scientific discoveries being made! As Besla says, “You’re not going to read anything I’m going to talk about in a book.”
Snake (on a Plane) in the Clouds
A report on the characteristics of a new ultra-faint dwarf found in the Magellanic Bridge, in the constellation Hydrus.