Johanna M. Vos

Astronomers analyzed data on the orphan planet WISE 0855 — a dim, cold ball not far away. For 11 hours, Webb watched its light, trying to spot the shadow of a moon. No direct discovery happened, but the method proved its worth. If many rogue planets have Titan-sized moons, we will soon find them.

Astronomers studied the twinkling of the binary brown dwarf system WISE 1049AB. For the warmer component, light from methane and carbon monoxide fluctuated more than from water, which can't be explained by clouds. A new mechanism—chemical instability—has been discovered. A 3D map of atmospheric wave

VHS 1256B is a giant planet, drifting alone in the dark. Its brightness swings by 40% due to global storms of scorching sand. Data from the James Webb telescope and computer models showed that dust clouds blanket the planet entirely, explaining the strange changes in its light and color. This discov