It is difficult to tell if planets embedded in their natal protoplanetary disks are migrating closer to their stars. The authors of today’s paper devise a new observational signature to figure that out.
Why can’t more exoplanet systems be like TRAPPIST-1? Why do so many Kepler systems have only one transiting planet? Today’s paper tries to answer both questions.
Johnny Cash sang about “walking the line” as a metaphor for maintaining honesty and morality. Hopefully, he wasn’t talking about a snow line in a protoplanetary disk. Today’s featured study shows these snow lines may not follow such a narrow path.
How can we explain hot Jupiters? The answer is not completely clear yet, but we are closing in on it: it seems that binaries may play an important role on the formation of these oddball planets.
What can this planet tell us about the evolution of planetary systems?
Hot Jupiters are weird and lonely. Is gravitational perturbation to blame?