Hunting for Stellar Streams
A newly discovered stellar stream may be the long-searched for tidal debris from the Milky Way’s largest globular cluster.
Where Did All the Dark Matter Go?
The discovery of a second dark matter deficient galaxy by van Dokkum et al. has caused the debate on galaxies lacking dark matter to resurface.
Understanding Dwarf Galaxies with a Heart of Steel
Hydrodynamical simulations shed new light on the metallicity of stellar populations in dwarf galaxies.
How the Milky Way Got its Spiral Arms
The spiral arms of galaxies are among the most recognizable galactic features, yet we still know little about their precise formation mechanism. Today’s paper leverages new data from the Gaia mission to test some of the leading theories.
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