IS ULTIMA THULE SURROUNDED BY MINI-MOONS? Long range images have revealed something strange about Ultima Thule, the distant Kuiper Belt Object that NASA's New Horizons spacecraft is approaching for a New Year's Day flyby. Although it is almost certainly irregular in shape, the brightness of Ultima Thule does not seem to change as it rotates in sunlight. One possible explanation: A swarm of "mini-moons." Visit today's edition of Spaceweather.com for the full story.
