James Webb Fishes Out an Invisible Planet from a Dusty Disk ⚡ экспресс
Astronomers stumbled upon a third giant planet in the β Pictoris system—now the second known system where more than two planets have been 'photographed'. Its spectrum revealed its atmosphere, and its orbit suggests it’s 'trimming' the inner edge of the dusty disk, like an invisible gardener. How many more planets are hiding in those bright disks, I wonder?
Using James Webb, astronomers 'fished out' a third giant planet from the murky dust disk of the star β Pictoris. Two others were already known, but this one was hiding in the bright light, like a fish in muddy water.
Regular imaging didn't help, so they used splitting light into colors: it revealed the fingerprints of water, methane, and carbon monoxide. It's like fishing by chemical 'scent': instead of casting a net blindly, they used a precise lure—a template of molecular lines.
The fished-out planet β Pic d is 2–4 times more massive than Jupiter and orbits far out—farther than Neptune is from the Sun. With its gravity, it scrapes out the inner edge of the dust disk, like raking silt. A year on it lasts over a hundred Earth years, and the method itself opens our eyes: searching for worlds where before we saw only murk.
🎯 A year on β Pic d lasts at least a century and a half: the planet is so distant that a single orbit takes over 100 Earth years.