James Webb Space Telescope observes 72 stars and finds planet formation is a race against time

As a result, they found that forming planets is a real race against time. This is because the material that serves as the building blocks for planets is constantly escaping the swirling platters of gas and dust, or protoplanetary disks, that wrap around infant stars. Some types of planets may find their formation window closing sooner than others. The team's research represents the most in-depth investigation yet into how matter escapes these protoplanetary disks and how this escape gives rise to different stages of planet formation around sun-like stars. All in all, the study helps paint a better picture of how and why our solar system took the shape it did around the infant sun around 4.6 billion years ago. "Gas giants like Jupiter must assemble their massive atmospheres while the disk is still substantial enough to supply them, before winds and jets carry that raw material away into space," team leader Naman Bajaj from the University of Arizona said in a statement. An ill wind blows around infant stars The team conducted its research using data collected ’s Mid-Infrared Instrument (MIRI). The scientists tracked matter loss , one of the most common molecules in protoplanetary disks. Each of the stars involved in the investigation represented a different stage in the early life of a star system. That meant putting these snapshots together allowed the researchers to create a "movie" detailing the early life of a planetary system. One of the most important findings of this approach is the mechanisms for material loss from protoplanetary disks seem to evolve and switch dominance as an infant star ages. This is important because gas giants like Jupiter and Saturn have vast atmospheres. They thus require more raw material to form than smaller rocky worlds like Earth do. Pyle (SSC))The researchers found that early in the evolution of protoplanetary disks, powerful, magnetically driven jets and winds dominate mass loss. These jets and winds are powered . Later, as the disk thins and starlight can pass through it more easily, these winds and jets weaken, and magnetic processes are dominated by high-energy radiation from the infant star ionizing gas and blowing it into space. The latter process is called photoevaporation. All this reveals there is no one single process responsible for stripping planet-forming material from around infant stars. The research also demonstrates the JWST is more than capable of studying the dispersal of gas and dust around individual infant stars.