Featured Image: A Collection of Galaxy Clusters
A survey of the largest gravitationally bound structures in the universe seeks to understand why some clusters are better gravitational lenses than others.
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Featured Image: Symbiotic Star’s Nebula Shines in X-rays
Close binary system R Aquarii dazzles in archival observations, revealing diffuse X-ray emission for the first time.
Featured Image: A Cosmic Butterfly Spreads Its Wings
What do new Hubble observations reveal about the young, massive planetary nebula NGC 6302?
Featured Image: A Shocking Way to Accelerate Solar Particles
A three-dimensional view of the solar atmosphere leads to new insights into how the Sun accelerates particles.
Featured Image: Magnetic Fields and Solar Outflows
New models of the Sun’s magnetic field seek to solve a long-standing conflict between simulations and spacecraft observations.
Featured Image: Explosive Star Formation
How does a massive star form and grow? Certainly not peacefully! A new study explores clues revealed by a powerful recent explosion.
Featured Image: An Outbursting Binary System
Simulations explore mass loss and X-ray outbursts in an extreme binary star system.
Featured Image: When Stellar Winds Blow
Simulations show how dense and dusty molecular clouds are affected by the winds from newly formed stars.
Featured Image: A Twisted Solar Filament
Astronomers examine a tightly coiled rope of plasma as it moves on the solar surface.
Featured Image: Mapping the Boundaries of a Coronal Hole
A team of scientists has tested our ability to measure “holes” in the Sun’s atmosphere, which may be a main source of the magnetic fields that fill interplanetary space.