Electrons of the Interstellar Medium
What’s really going on with electrons in planetary nebulae and H II regions?
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Perfect Blackbodies in the Sky
A recent study has uncovered 17 stars with truly blackbody spectra. What are these unexpected spherical cows, and what can we use them for?
Many Small Planets May Hide Close to Low-Metallicity Stars
A new study has revealed that there may be a treasure trove of small planets hiding close in around low-metallicity stars.
Speeding White Dwarfs May Point to Past Explosions
Three of the fastest known stars in the Milky Way have been discovered in Gaia data. What can they tell us about Type Ia supernova explosions?
Screening for the Slow Solar Wind
The solar wind has traditionally been separated into two states — the slow solar wind and the fast solar wind — based on its velocity. Does this simple categorization tell the whole story?
Puzzles from an Ensemble of Young Planets
New observations of a young hot Jupiter — likely surrounded by a set of three gas-giant siblings — is raising questions about the formation of giant planets.
Two Explosions with Similar Quirks
Could a burst of gamma rays from 2015 help us to understand the strange emission from the merging neutron stars observed last year?
How to Turn Off a Galaxy’s Star Formation
New ALMA observations provide a closer look at how a galaxy may be shutting down its star formation.
Oscillations in the Eye of the Bull
Red giant Aldebaran is one of the most recognizable stars in the night sky. What can historical and modern radial velocity data tell us about this star and the planet that orbits it?
Investigating Our Expanding Universe
The universe is expanding — but we’re still not sure how quickly! A new study investigates whether we can resolve the conflict between measurements of its expansion rate.