A Recurring Character: RS Oph Shines Again in X-Rays
Hello again, RS Oph! What can X-ray observations tell us about one of the only known recurrent novae in the Milky Way?
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Chasing a Solar Filament
Astronomers combine spectra and images to track a strand of solar plasma as it escapes from the Sun’s atmosphere.
Meteorites Reveal Radioactive Heating in Asteroids
Meteorites that rain down on Earth provide a way to study the building blocks of the solar system. What can meteorites tell us about their parent asteroids?
A Magnetar Bursting with Mysteries
What caused the change in behavior of a certain magnetar? Crustal chaos, or magnetic field shifts?
Seeking Protostellar Companions in Orion
A team of astronomers has used sensitive radio arrays to probe the depths of dusty clouds and investigate the earliest stages of star formation.
Clues from Quasars in the Early Universe
The most luminous objects in the universe can help us understand how supermassive black holes gained mass in the earliest galaxies.
Galactic Chemistry with Solar Twins
Astronomers study remarkably Sun-like stars to understand how the Milky Way gets its heavy metals.
Can Gravitational Waves Tell Us How Binary Black Holes Form?
Elusive black hole binaries can arise from isolated pairs of stars or in the heart of dense star clusters — and gravitational waves can reveal their secrets.
Winding Up to a Quadrillion Electronvolts of Energy
What cosmic engine is accelerating particles to up to quadrillions of electronvolts?
Testing General Relativity with Pulsars
Astronomers put Einstein’s famous theory of gravity to the test using a type of extreme stellar remnant not yet discovered when the theory was published in 1915.