A gravitational tug-of-war between three stars has this planet living on the edge.
NN Serpentis has everything: a white dwarf + main sequence binary system that is believed to contain two planets and, now, a disc of debris.
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.
The latest science from a few early-career researchers.
Recently, several supernovae have been observed that do not fit in any of the known categories. These Calcium-rich supernovae are challenging to explain, but in this astrobite you read that they are likely the result of an expelled merger.
Most stars—including Polaris, Sirius, and those in Orion’s Belt—actually hide multiple stars. Some of these stars are on orbits so wide that they may no longer be gravitationally bound. Why?