In two related firsts, the James Webb Space Telescope has discovered sand-filled rains on a distant exoplanet as its "sandcastle" partner world forms from sandy matter before the eyes of astronomers.

James Webb Space Telescope sees 1st exoplanet raining sand alongside 'sandcastle' partner world

Source: space
Source Link: https://www.space.com/astronomy/exoplanets/james-webb-space-telescope-sees-1st-exoplanet-raining-sand-alongside-sandcastle-partner-world