Chaos Among the Stars
Some variable stars seem to be “golden”, but is this property fundamental or just chance?
The Explosions of Stars Wrapped in Hydrogen
How does hydrogen affect supernovae? A new theory explores inconsistencies between theory and observation.
Triggered fragmentation in self-gravitating disks
How to form clumps in the intermediate ranges of massive protoplanetary disks? Could these later be planets?
Chondrules are old and everywhere – are solar system’s solid bodies built by them?
A model that needs fewest parameters to explain a scenario is favourable. The fact that mm-size dust grains (chondrules) are present in the entire solar system brings rise to the question, whether all bigger solid objects are a collection of chondrules.
Giant planets from far out there
Planets are ubiquitous in the Milky Way. Therefore, building them must be straightforward, right? Not at all!
Small, but powerful
Earth’s atmosphere is about 100 times less massive than Venus’ atmosphere. This gave rise to the idea that Earth had a more massive atmosphere, which got then depleted by impacts. This Astrobite discusses what would have been the optimal impactor size.