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That’s no planet! It’s one to five moons.
Most planets in our solar system have multiple moons, from Mars’ 2 to Saturn’s ~82. Today’s paper explores the stability and detectability of multi-”exomoon” systems orbiting planets beyond our solar system.
Tidal Tugs Shed Light on Binary Companions
How can tides help us find hidden compact companions and yield detailed physics on stellar binaries?
Was Uranus Impacted?
Uranus spins on its side, and its five main moons have a unique composition and mass distribution. Ever wondered why? Today’s paper offers an explanation.
Missing dark matter in a nearby dwarf galaxy
A satellite of Andromeda is missing an important ingredient — so where did it go?
LIGO’s Second Neutron Star Merger: Squeaking by With Just One Detector
How many LIGO detectors does it take to find a neutron star merger? It turns out sometimes you only need one.
The Von Trapp Family Planets: A Sixth Planet Confirmed for K2-138
Music group or planetary system? Today’s paper confirms the existence of K2-138g, another sub-Neptune in K2’s most harmonious system
Beyond astro-ph
Astronomy beyond the research
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Navigating careers in astronomy
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