A fascinating discovery has been made around the star HD 135344B, located 440 light-years away in the constellation Lupus. Scientists have spotted a young planet shaping spiral arms in the surrounding disk of gas and dust. This is the first time researchers have directly observed a planet changing its environment in such a way.
This finding supports the idea that planets form from protoplanetary disks—large rings of material encircling young stars, as noted by NASA. These disks often show signs of formation, like rings and spirals, but this is the first solid evidence of a planet at work.
Previously, astronomers viewed the disk around HD 135344B using the SPHERE instrument on the Very Large Telescope in Chile. However, the new Enhanced Resolution Imager and Spectrograph (ERIS) offered a clearer glimpse. The planet, estimated to be twice the size of Jupiter, lies at the base of one spiral arm—just where scientists predicted it would be. It’s positioned roughly 30 times farther from its star than Earth is from the Sun.
Francesco Maio, a doctoral researcher at the University of Florence, emphasized the significance of this detection. Unlike earlier methods, they could directly observe the protoplanet’s signal still nestled in the dust. “We may be watching a planet come into existence in real time,” he shared.
Traditionally, the existence of exoplanets (those orbiting stars beyond our solar system) has been inferred through indirect methods, like observing dips in a star’s brightness as planets pass in front of them. However, detecting the planet’s own light provides stronger evidence of its existence.
Interestingly, the technique behind ERIS has also recently helped identify a potential brown dwarf in another protoplanetary disk around the star V960 Mon, located 5,000 light-years away. This shows the evolving capabilities of modern astronomy in understanding planet formation.
The search for planets continues to uncover remarkable discoveries in space. As technology advances, our understanding of how these celestial bodies form and evolve is becoming clearer than ever.
For more in-depth information on exoplanets, check out studies from reputable sources like this research paper.