Globular Clusters Shine in a Galaxy Lacking Dark Matter
Missing dark matter is not the only oddity of NGC 1052–DF2. New observations of this unusual galaxy are forcing us to rethink what we know about galaxies and the star clusters they host.
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Asteroids from a Martian Mega Impact
Could a long-ago giant impact have flung pieces of Mars throughout our inner solar system? Numerical simulations and clues from the mineral olivine point us toward an answer.
Magnetic Fields Versus Gravity
What can dust polarization measurements tell us about the magnetic fields in the star-forming region W51?
Clues from Bent Jets
A new study explores how observations of enormous radio jets can reveal information about the environments that surround them.
Unusual Metals in Galactic Center Stars
The Milky Way’s nuclear star cluster is full of surprises!
Shaping Globular Clusters with Black Holes
How many black holes lurk within the dense environments of globular clusters, and how do these powerful objects shape the properties of the cluster around them?
Modeling the Variable Heliopause Location
Five and a half years after Voyager 1 zipped across the heliopause, Voyager 2 still hasn’t followed its twin into interstellar space. Can models of the heliopause location help determine why?
NICER Eyes on Bursting Stars
A new instrument recently deployed at the International Space Station is examining X-ray explosions on neutron-star surfaces.
Signs of Asymmetry in Exploding Stars
How can we use observations to learn more about the morphology of supernova remnants?
The Fate of Exomoons when Planets Scatter
Planet interactions are thought to be common as solar systems are first forming and settling down. But what impact do these close encounters have on the moons of these planets?