The Sun plays an important role in protecting us from cosmic rays, energetic particles that pelt us from outside our solar system. But can we predict when and how it will provide the most protection?
Some distant active galaxies are louder in radio wavelengths than others. A new study explores whether this difference could be due to how quickly the supermassive black holes at their centers are spinning.
A hunt for merging dwarf galaxies has yielded an intriguing result: 180 million light-years away, a galaxy very similar to the Milky Way — with two dwarf-galaxy satellites just like our own Magellanic clouds.
Exoplanets in Kepler multiplanet systems tend to be “peas in a pod”: planets within the same system often have similar radii. A new study explores this odd behavior.
LIGO has announced the discovery of the lightest pair of black holes we’ve ever seen merge, allowing us to compare to the black holes detected by electromagnetic means.
We may be stuck in the Milky Way’s interior, but we can use distant variable stars to map out a picture of what’s happening in the outskirts of our galaxy.
Why is the Sun’s atmosphere so much hotter than its surface? A new study explores the role of magnetic waves in heating the Sun’s corona.
Neptune’s moon system is not what we would expect for a gas giant in our solar system — and its largest moon, Triton, may be to blame.
Only a small fraction of the cold hydrogen gas in the local universe is molecular gas, able to directly fuel star formation. But is this also true at earlier times in our universe?
It seems like science is increasingly being done with advanced detectors on enormous ground- and space-based telescopes. One might wonder: is there anything left to learn from observations made with small telescopes?