Setting the Speed Limit for Shock-Accelerated Cosmic Rays
Could supernova shocks be the source of charged particles accelerated up to quadrillions of electronvolts?
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Why Are Jets from Disrupted Stars So Rare?
A new theory explains why tidal disruption events are only rarely accompanied by powerful jets.
Tracking Down an Escaped White Dwarf
Researchers search for massive white dwarfs that once resided in the nearest open star cluster to Earth.
Making Sense of a Massive Black Hole in the Early Universe
A red point-source in the early universe is revealed to be a massive active galactic nucleus that contributes a third of its galaxy’s total mass. How did it grow so large so quickly?
How to Model the Strongest Material in the Universe
Modelers attempt to overcome the challenges posed by simulating the ultra-dense, ultra-strong crusts of neutron stars.
Enceladus, Previous Speedster
In order to get its present-day orbit, Enceladus must have felt the need for speed in its recent past.
Living in a Galaxy Cluster Slows Down Star Formation
Joining a galaxy cluster can fundamentally change a galaxy’s properties. New research looks at how galaxy clusters affect star formation beyond the local universe.
Setting Sunspots on a Collision Course
Colliding sunspots can produce solar flares, but not all collisions are accompanied by these outbursts. New simulations explore what it takes to make a solar flare.
FOUND: Missing Matter
Galaxies seem to have less matter than we think they should, but new research suggests it’s not missing — just hiding in the form of hot circumgalactic gas.
A Cosmic Dust Factory Ramps Up Production
A rare binary system containing hot stars with powerful winds makes dust when the stars approach each other every 13 years.