发现一颗没有恒星的系外行星，每秒吞噬 60 亿吨气体和尘埃

Scientists have identified a lone planet with a ferocious appetite. Located in the Chamaeleon constellation roughly 620 light-years away, the rogue planet, named Cha 1107-7626, exists in the vast emptiness of space, far from the warmth of any star.

like this one are cosmic drifters — worlds that roam the galaxy untethered, unlike the familiar planets bound to a solar system. Most rogue planets are thought to be cold, silent wanderers. But Cha 1107-7626 is different.

For instance, Cha 1107-7626 is not just drifting through interstellar space — it's feeding.

Using the 's (ESO) (VLT), astronomers have caught it pulling in gas and dust at an astonishing rate: six billion tons every single second. Never before has a rogue planet, or any planet, been observed growing this fast..

"This is the strongest accretion episode ever recorded for a planetary-mass object," Almendros-Abad said.

With a mass equivalent to between five and 10 Jupiters, Cha 1107-7626 is one of the lowest-mass free-floating planets known to host a disk and show active accretion. Observations from ESO's VLT and NASA's (JWST) reveal telltale signs of a rich, evolving system: infrared excess from 4 to 12 microns, silicate features at 10 microns (similar to those in stars and brown dwarfs), hydrocarbon emission lines pointing to a carbon-rich disk, and multiple signatures of ongoing accretion. Together, these make Cha 1107-7626 the clearest case yet of disk-driven growth in a planetary-mass object — a true poster child for how rogue planets can build themselves in the dark..