After three years of exploring the universe, the James Webb Space Telescope (JWST) has officially detected its first new exoplanet. 

Astronomers have confirmed the discovery of a gas giant planet named TWA 7b, located near the young star CE Antliae (also known as TWA 7). This star, just over 6 million years old, has been closely studied since 1999, as it offers a unique top-down view from Earth.

TWA 7b resembles Saturn in its composition, a gas giant still glowing from its recent formation. But what makes this discovery groundbreaking is its role as a so-called “shepherd” planet, a planet that shapes and clears gaps in planetary rings, the discovery was reported on June 25 through the online platform of Nature Portfolio by Springer Nature, home to the renowned science journal “Nature”.

Located approximately 110 light-years from Earth, TWA 7b orbits its star at a distance of 52 astronomical units (AU) about 52 times the distance between Earth and the Sun. Surrounding the planet are three rocky and dusty rings, with one narrow ring that has two empty gaps. In the center lies a mysterious hole glowing with infrared light, a sign that led researchers to investigate further.

Follow-up simulations revealed that there was radiation coming from the newly formed planet about 30% the size of Jupiter. This confirmed that TWA 7b is indeed influencing the structure of its surrounding ring system carving gaps in the dust and debris.

This marks the first clear detection of a shepherd planet, offering fresh insight into how planetary systems evolve. Scientists hope this breakthrough will help us better understand not only the formation of rings and planets but also the early architecture of solar systems like our own.