Webb's Picture of the Month Features Two Planet-Forming Disks and a Possible Planet

NASA's James Webb Space Telescope has released its latest Picture of the Month, featuring two distinct protoplanetary disks in the Taurus star-forming region, observed in late 2023 and early 2024. The images, captured using Webb's powerful infrared instruments, showcase the dynamic processes of planet formation around young stars, providing astronomers with unprecedented detail to understand how solar systems like our own are born from clouds of gas and dust. The left image depicts the star FS Tau B, a stellar system only about 2.8 million years old. A prominent dark band horizontally obscures the central star, which is believed to be an edge-on protoplanetary disk—the raw material from which planets coalesce. Dramatic, broad outflows of material in hues of orange and blue extend above and below this disk, shaped by powerful stellar winds. Most strikingly, a narrow, focused jet of material erupts perpendicularly from the star, a signature of the intense magnetic activity and accretion processes funneling material onto the young stellar object. In contrast, the right image shows the star XZ Tau B, enveloped within a bright yellow disk of dust viewed nearly face-on. Here, light from the central star scatters off the dust particles, creating distinctive purple lobes of illuminated material above and below the disk plane. This scattering reveals the structure and composition of the disk itself. Astronomers analyzing the data have noted a potential gap or spiral structure within XZ Tau B's disk, which could be indirect evidence of a planet in the process of forming, gravitationally clearing a path through the circumstellar material. These comparative observations are vital for testing theories about the different pathways and timelines of planetary system assembly.