Sagnick Mukherjee is a 51 Pegasi b postdoctoral fellow at Arizona State University’s School of Earth and Space Exploration, who began the work below as a PhD student at UC Santa Cruz (and was earlier affiliated with Johns Hopkins University).
He is the lead author of the Science (May 21, 2026) study that used jwst’s NIRISS instrument and limb-resolved transmission-spectroscopy to detect the first confirmed daily weather cycle on an exoplanet, the hot-jupiter wasp-94ab (src-jwst-wasp-94ab-weather-cycle-2026-05). His next work, with senior author david-sing, will study cloud cycling across a range of exoplanets using a new large JWST program, including an eccentric gas giant in the habitable zone.
Notable Quote
“It was really surprising how different the two halves of the same planet are.”