Imad Pasha

Abstract Near the end of their lives, low-mass and intermediate-mass stars expel metal-enriched material in winds and outflows, ultimately producing planetary nebulae1,2. The ejected material is expected to fragment and mix into the interstellar medium (ISM), but this final assimilation step has been difficult to observe directly3,4.

There are several ways for a supermassive black hole (SMBH) to escape from the center of a galaxy. The first step is always a galaxy merger, which leads to the formation of a binary SMBH at the center of the merger remnant (Begelman et al. 1980; Milosavljevic & Merritt 2001).

The night before Tranquility Base Hotel & Casino officially dropped, the Arctic Monkeys played “Four Out of Five” on “The Tonight Show Starring Jimmy Fallon.” As the camera pans onto the band, we notice frontman Alex Turner sitting behind a piano. Piano has never been the cornerstone of how Turner wrote songs in the past — but now, it’s the basis of almost all of Tranquility. In fact, a lot of things about this album are new.