Astronomers Find Surprise Exoplanet Forming Around Sun-Like Star

It wasn’t so long ago that exoplanets were technically only hypothesized and had never been directly observed. Today, it seems like every other week produces an amazing new observation and an exciting new insight.
This week’s breakthrough comes from the Very Large Telescope in Chile, used by a team from Ireland’s University of Galway. The team looked at a little-studied group of young stars, hoping to catch Sun-like stars that may provide insight into the formation of our own star. Instead, the telescope revealed a spectacular view of a ringed disk surrounding one of the region’s nascent stars, WISPIT 2. It featured an incredibly elaborate and well-captured series of bands, sparking immediate interest.
The team quickly followed up with an observation aimed at seeing a planet inside these record grooves—and they captured a remarkably clear view of a gas giant forming in the largest of the disk’s gaps. They call it WISPIT 2b.
The planet is roughly Jupiter-sized and orbits a young, roughly Sun-like star. That duo of similarities to our own solar system makes this not just an exciting system to study for the advancement of exoplanet science, but as a model for the development of our own Sun and planet.
The team says this is the first confirmed detection of a planet in a multi-ringed protoplanetary disk. Candidates have come about before, and the grooves themselves have been taken as evidence of a planet’s formation, but this is the first clear, unequivocal detection.
A team from the University of Arizona also pitched in, taking a shot of the planet in the visible portion of the light spectrum. They saw indications that WISPIT 2b is still actively accreting gas. This means that it’s still forming its atmosphere, helping to specify where it is in its planetary development.
The overall system is in its infancy, presenting an incredible opportunity for research on the evolution of star systems. The original goal of the investigation was to determine whether far-orbiting gas giants are more likely to form around older or younger stars, with this observation being pointed at a very young cluster of stars.
Dr. Christian Ginski, the study’s second author, believes the observation will lead to important further research.
“I think many of our colleagues who study planet formation will take a close look at this system in the years to come,” he said. “This is the next generation of astrophysicists who I am sure will make more breakthrough discoveries in the years to come.”
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