Smallest Kuiper Belt Object Detected

This is an artist's impression of a one-half-mile-diameter Kuiper Belt Object (KBO) that was detected by NASA's Hubble Space Telescope. The icy relic from the early solar system is too small for Hubble to photograph. The object was detected when it passed in front of a background star, temporarily disrupting the starlight.

About the data

The science team includes: H. Schlichting (California Institute of Technology/University of Toronto), E. Ofek (California Institute of Technology/Einstein Fellow), M. Wenz (NASA/GSFC), R. Sari (California Institute of Technology/Hebrew University), A. Gal-Yam (Weizmann Institute of Science, Israel), M. Livio and E. Nelan (STScI), and S. Zucker (Tel Aviv University).