JWST Finds the Smallest Asteroids Ever Seen in the Main Belt

This diagram shows the orbits of 2,200 potentially hazardous objects as calculated by JPL's Center for Near Earth Object Studies (CNEOS). Highlighted is the orbit of the double asteroid Didymos, the target of NASA's Double Asteroid Redirect Test (DART) mission, launched in 2021. Credit: NASA/JPL-Caltech

The JWST was never intended to find asteroids. It was built to probe some of our deepest, most demanding questions about the cosmos: how the first stars formed, how galaxies have evolved, how planets like ours take shape, and even how life originated. However, it’s first and foremost a powerful infrared telescope and its unrivalled … Read more

Smallest main-belt asteroids ever detected found in JWST data

Back to Article List MIT researchers have identified 138 near-Earth objects using a common astrophotography technique. NASA’s James Webb Space Telescope reveals a population of small asteroids in the main asteroid belt in this artist’s illustration. Credit: Ella Maru/MIT Over the past 200 years, astronomers have cataloged over a million asteroids in the solar system’s … Read more

“It’s like taking a picture of lightning:” How astronomers raced to track the smallest asteroid ever seen

Astronomer Teddy Kareta had spent countless nights over the years observing various objects across our solar system using Arizona’s Lowell Discovery Telescope, or LDT. On Nov. 19, 2022, he set his alarm to ring shortly before midnight, in preparation for what he presumed would be a quiet observing night — and woke up to missed … Read more