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International Space Science Institute (ISSI)Hallerstrasse 6
3012 Bern
Switzerland

Phone +41 31 684 48 96
Email issi@issibern.ch

Asteroids

7. January 2026

Asteroid’s Moon Formed Like a Puzzle from Slow-Moving Mini-Moons, Study Finds

A new study using data from NASA’s Lucy mission reveals that the asteroid Dinkinesh’s tiny moon “Selam” was built from multiple low-speed collisions between small moonlets, making it the first confirmed “contact binary” moon. Scientists now believe Selam formed not from two, but at least four separate bodies, offering fresh insight into how asteroid moons form and evolve.

14. August 2025

Catching Comets: Rosita Kokotanekova’s Vision for Planetary Defence and Discovery

In her engaging TEDxVitosha presentation, Dr. Rosita Kokotanekova, Planetary Science Discipline Scientist at ISSI, poses a compelling question: Could we catch a comet before it hits Earth? She frames this not as science fiction, but as a bold, plausible scientific mission with transformative potential.

A Spiral Amongst Thousands
Credits ESA/Webb, NASA & CSA, A. Martel