In the Media

Prof. Julien de Wit speaks with National Geographic reporter Robin George Andrews about how special infrared filters on the James Webb Space Telescope (JWST) can be used to find small asteroids and precisely determine their size. “Asteroids get much brighter in the infrared than in the visible as they move away from Earth, and they are thus easier to detect or track with infrared facilities—JWST being the biggest of all,” says de Wit.