Interstellar interlopers are bodies formed outside of the Solar System but observed passing
through it. The first two identified interlopers, 1I/'Oumuamua and 2I/Borisov, exhibited …

CO and CO 2 are the two dominant carbon-bearing molecules in comae and have major
roles in driving activity. Their relative abundances also provide strong observational …

The recently discovered population of interstellar objects presents us with the opportunity to
characterize material from extrasolar planetary and stellar systems up close. The …

The coma of comet 67P/Churyumov–Gerasimenko has been probed by the Rosetta
spacecraft and shows a variety of different molecules. The ROSINA COmet Pressure Sensor …

At present, there exists no consensus in the astronomical community regarding either the
bulk composition or the formation mechanism for the interstellar object 1I/2017 U1 …

We present new, ice species-specific New Horizons/Alice upper gas coma production limits
from the 2019 January 1 MU69/Arrokoth flyby of Gladstone et al. and use them to make …

We report statistically significant detections of nonradial, nongravitational accelerations
based on astrometric data in the photometrically inactive objects 1998 KY 26, 2005 VL 1 …

Formyl radical (HCO•) and hydroxycarbonyl radical (HOCO•) are versatile building blocks in
the formation of biorelevant complex organic molecules (COMs) in interstellar medium …

On 31 August 2019, an interstellar comet was discovered as it passed through the Solar
System (2I/Borisov). On the basis of initial imaging observations, 2I/Borisov seemed to be …

Exoplanet discoveries since the mid-1990's have revealed an astounding diversity of
planetary systems. Studying these systems is essential to understanding planetary formation …