In a stunning advancement in planetary science, a global group of astronomers headed by the University of Galway has discovered what is probably a new planet currently in the process of forming, which may be a gas giant several times the size of Jupiter. The European Southern Observatory's Very Large Telescope (ESO's VLT) in Chile made the discovery, which has enthralled astronomers worldwide.

The team took high-resolution near-infrared pictures of the faraway young star system 2MASS1612, sometimes known as RIK113. This system, which is encircled by a huge protoplanetary disk, is 430 light-years away from Earth. Due to its distance—similar, as the researchers metaphorically observed, to the size of a pint glass in Galway as seen from Tuam—this disk, which extends over an area greater than our entire solar system, appears little in the night sky.

Published by the ESO as their Picture of the Week, the disk image depicts a lovely structured formation with rings and spiral arms, which are indicative of a planet forming inside. The disk extends up to 130 astronomical units (AU) from the central star, which is 130 times the distance between the Sun and Earth. Significantly, it has a central gap at about 50 AU, which is believed to be influenced by the forming planet's gravity, as well as a well-defined bright ring. For context, Neptune, the farthest planet in our solar system, orbits the Sun at approximately 30 astronomical units (AU).

A series of spiral arms that create a pattern similar to the outer bands of a hurricane on Earth is one of the most notable features inside the disk. These spirals extend over an inner area with a radius of 40 AU, which would include every planet in our solar system. This observation is especially interesting because, according to the research team, the combination of rings and spiral arms in this setup closely resembles theoretical models of how a developing planet interacts with and molds its surrounding disk.

Dr. Christian Ginski, the study's lead author and a lecturer at the University of Galway's School of Natural Sciences, highlighted the importance of the results. Dr. Ginski stated, "Although our team has now observed close to 100 possible planet-forming disks around nearby stars, this image is something special." "One rarely finds a system with both rings and spiral arms in a configuration that almost perfectly fits the predictions of how a forming planet is supposed to shape its parent disk." Discoveries like this get us closer to comprehending both planetary formation as a whole and the potential origins of our solar system in the far past.”

The reputable publication Astronomy and Astrophysics released the study. Dr. Ginski recognized the important contribution of four University of Galway postgraduate students—Chloe Lawlor, Jake Byrne, Dan McLachlan, and Matthew Murphy—who assisted in interpreting the data and improving the findings in addition to directing the study.

Chloe Lawlor, a PhD student in astrophysics, called her participation in the research an "incredible experience." She stated that being able to contribute to such innovative work early in her career had given her a solid base in cooperative and scientific writing. Jake Byrne, an MSc student also in astrophysics, emphasized the project's collaborative environment and expressed his motivation to seek a long-term career in planetary science. Dan McLachlan, a fellow MSc student, remarked that this initial attempt at academic publishing had improved his analytical abilities and provided him a greater insight of astrophysical research.

The research team, which included collaborators from the UK, Germany, Australia, the USA, the Netherlands, Italy, Chile, France, and Japan, also observed possible indicators of atmospheric emissions inside the disk gap that might be associated with the developing planet. They did, however, warn that more research is required to verify that a planet has an atmosphere.

Dr. Ginski's team has obtained valuable observation time with the James Webb Space Telescope (JWST) in its next cycle to further explore the suspected planet and its surroundings. The JWST, which is famous for its unmatched sensitivity, may be able to take a direct picture of the young planet, which would perhaps be the clearest proof so far of a gas giant being formed.

This finding, if validated, would offer a live view of a planet's formation and make the 2MASS1612 system an important case study for exploring how developing planets interact with their parent disks. These insights might illuminate the origins of our solar system and the mechanisms that regulate planetary formation throughout the galaxy.

The complete study can be found online at the Astronomy & Astrophysics journal: https://doi.org/10.1051/0004-6361/202451647.