The observed properties of the local interstellar medium (LISM) have been facilitated by a growing ultraviolet and optical database of high spectral resolution observations of interstellar absorption toward nearby stars. Such observations provide insight into the physical properties (e.g., temperature, turbulent velocity, and depletion onto dust grains) of the population of warm clouds (e.g., 7...

The Ulysses spacecraft has been orbiting the Sun on a highly inclined ellipse almost perpendicular to the ecliptic plane (inclination 79◦, perihelion distance 1.3 AU, aphelion distance 5.4 AU) since it encountered Jupiter in 1992. The in-situ dust detector on board continuously measured interstellar dust grains with masses up to 10−13 kg, penetrating deep into the solar system. The flow directi...

Thioformic acid (TFA) is the sulfur analog of formic acid, simplest organic acid. It has three analogues HCOSH, HCSOH, and HCSSH, each them having two rotational isomeric (rotameric) forms: trans cis where form energetically more stable. In this article, we study computational energetics anharmonic vibrational spectrum TFA including overtone combination vibrations. We also studied experimental ...

Quantifying the composition of material in protoplanetary disks is essential to determining potential for exoplanetary systems produce and support habitable environments. When considering habitability, complex organic molecules are relevant, key among which methanol (CH3OH). Methanol primarily forms at low temperatures via hydrogenation CO ice on surface icy dust grains a necessary basis format...

Based on Voyager 2 observations, a numerical model of the heliosphere, which includes the mutual interaction of the interstellar medium, solar wind plasma, and interstellar hydrogen, is employed to speculate on the possible crossing of the termination shock by the Voyager spacecraft. The multiple crossings caused by large-scale solar wind uctuations are studied quantitatively. In the event that...

Identification by the Ulysses spacecraft of interstellar grains inside the planetary system provides a new window for the study of diffuse interstellar matter. Dust particles observed by Ulysses and confirmed by Galileo are more massive (≥ 10−13 g) than the ’classical’ interstellar grains. Even bigger grains (≈ 10−7 g) were observed in form of interstellar meteors. We analyze the consequences o...

In recent years, phosphorus monoxide (PO) -- an important molecule for prebiotic chemistry has been detected in star-forming regions and the comet 67P/Churyumov-Gerasimenko. These studies have revealed that, interstellar medium, PO is systematically most abundant P-bearing species, with abundances that are $\sim$1-3 times greater than those derived nitride (PN), second P-containing molecule. Th...

The first excited torsional state of the chiral molecule propylene oxide, CH3C2H3O, is investigated from millimeter up to sub-millimeter wavelengths (75–950 GHz). vibrational mode υ24, analysed using programs ERHAM and XIAM. Rotational constants tunneling parameters are provided, a description A-E splittings due internal rotation given. Furthermore, potential barrier height rotation, V3, determ...

A fraction of the interstellar atoms crosses the interface between the solar wind and the ionized component of the local interstellar medium (the heliospheric interface), and enters the heliosphere. The number of penetrating atoms depends on the strength of the atom-plasma interaction, i.e. on the atom type. In this paper we consider the penetration of the interstellar oxygen atoms, and we stud...

I review those properties of the interstellar medium within 15 light-years of the Sun, which will be relevant for the planning of future rapid (vZ0.1c) interstellar space missions to the nearest stars. As the detailed properties of the local interstellar medium (LISM) may only become apparent after interstellar probes have been able to make in situ measurements, the first such probes will have ...