▪ Abstract The Kuiper Belt consists of a large number of small, solid bodies in heliocentric
orbit beyond Neptune. Discovered as recently as 1992, the Kuiper Belt objects (KBOs) are …

Over the past three decades, we have witnessed one of the great revolutions in our
understanding of the cosmos—the dawn of the Exoplanet Era. Where once we knew of just …

THERE are many potential applications of'intelligent'aqueous polymer systems1–8 in
medicine, biotechnology, industry and in environmental problems9–13. Many of these …

The Centaurs are recent escapees from the Kuiper Belt that are destined either to meet fiery
oblivion in the hot inner regions of the solar system or to be ejected to the interstellar …

A survey is presented of test particle stability in the outer solar system. Test particles are
numerically integrated for durations ranging from 20 to 800 million yr. No evidence is found …

We present a new spectrum of the Centaur object 5145 Pholus between 1.15 and 2.4 μm.
We model this, and the previously published (0.4-to 1.0-μm) spectrum, using Hapke …

We propose that several short-duration events observed in past stellar occultations by
Chiron were produced by ring material. Some similarities between these events and the …

We combine new and published data to show that the optical color distributions of cometary
nuclei and Kuiper belt objects (KBOs) are significantly different. The nuclei are, as a group …

The practical distinctions between asteroids and comets, viewed as products of accretion on
either side of the snow line, are less clear-cut than previously understood. In this chapter, we …

The activity of most comets near the Sun is dominated by the sublimation of frozen water, the
most abundant ice in comets. Some comets, however, are active well beyond the water-ice …