Despite the generally hostile nature of the environments involved, chemistry does occur in
space. Molecules are seen in environments that span a wide range of physical and chemical …

The New Horizons (NH) flyby of the Pluto–Charon binary planet and its system of four small
surrounding satellites in mid-2015 revolutionized our knowledge of this distant planet and its …

INTRODUCTION The Kuiper Belt hosts a swarm of distant, icy objects ranging in size from
small, primordial planetesimals to much larger, highly evolved objects, representing a whole …

INTRODUCTION The New Horizons spacecraft flew past (486958) Arrokoth (provisional
designation 2014 MU69) on 1 January 2019. Arrokoth is a member of the subclass of trans …

Recent observational and experimental evidence for the presence of complex organics in
space is reviewed. Remote astronomical observations have detected ∼∼ 200 gas-phased …

Pluto's atmospheric haze settles out rapidly compared with geological timescales. It needs to
be accounted for as a surface material, distinct from Pluto's icy bedrock and from the volatile …

We report the detection of ammonia (NH3) on Pluto's surface in spectral images obtained
with the New Horizons spacecraft that show absorption bands at 1.65 and 2.2 μm. The …

The surface of Pluto as it is understood on the eve of the encounter of the New Horizons
spacecraft (mid-2015) consists of a spatially heterogeneous mix of solid N 2, CH 4, CO, C 2 …

Radiation processing of the surface ices of outer Solar System bodies may be an important
process for the production of complex chemical species. The refractory materials resulting …

A novel nanostructured silver chromite with the chemical formula Ag 2 Cr 2 O 4 was
synthesized at 400° C by simple, cost effective, flash auto-combustion method. The average …