Exoplanets

The successful unfurling of the five-layered, tennis court-sized assemblage is a major milestone for the new observatory

With a density close to that of pure iron, GJ 367b may be the remnant metal-rich core of an evaporated giant world

Interstellar xenia, or the welcoming of cosmic strangers, could solve this mystery

A new theory suggests that searches for molecular complexity could uncover convincing evidence of extraterrestrial life—and do so soon

A privately funded telescope called Toliman will seek habitable worlds in our nearest neighboring star system, potentially sparking a new wave of exoplanetary exploration

Sparked by major advances in their field, astrobiologists are grappling with how best to discuss possible breakthrough discoveries with the public

A major report outlining the highest priorities and recommendations for U.S. astronomy has finally been released, revealing the shape of things to come

Four candidate worlds found via flashes of radio emission may be the first of many revealed by a new planet-hunting technique

A battle for the future of American stargazing is about to begin—and the stakes are sky high

The blog’s author reflects as nine years of writing undergo an evolutionary change

Our nearest star system is slowly revealing itself

Silicate dynamos could drive magnetic fields in more planets—and younger ones