James Webb Fishes Out an Invisible Planet from a Dusty Disk express
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.