Meredith A. MacGregor

A swarm of comets around RZ Psc briefly dimmed the star's light as they passed in front of it. The TESS telescope caught these dimmings, allowing astronomers to estimate the sizes of these icy bodies—between one and seven kilometers. The size distribution resembled the belt of icy boulders beyond Ne

The James Webb telescope is hunting for an atmosphere on TRAPPIST-1 e, but the star's flares get in the way. Scientists found a fix: record the noise using the neighboring airless planet TRAPPIST-1 b, then subtract it from the main signal. Early tests show the method works on quiet days, but a power